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Comprehensive coverage of special theory (frames of reference, Lorentz transformation, more), general theory (principle of equivalence, more) and unified theory (Weyl's gauge-invariant geometry, more.) Foreword by Albert Einstein.

Introduction to the Theory of Relativity

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If you’re a car or motorcycle enthusiast, then you will love all the available auto &amp; cycles magazine subscriptions at DiscountMags. We offer the best magazines with information about your favorite car or motorcycle topics. Whether you are looking for a magazine on the newest cars and bikes, off-road machines, dirt bikes, trains, or anything else with a motor, you can find any publication that you are looking for right here.

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Auto & Cycles

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Business & Finance

<span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">DiscountMags has an excellent selection of children’s magazines available online with numerous publications available for boys and girls of all age groups. There are educational publications, activity and sports magazines, those dedicated to preteen and teen fashion, literary periodicals, and many other types of kid’s magazines that are related to the specific interests of your child.&nbsp;


It doesn’t matter what kind of children’s magazines that you are looking for; you will be able to find the best one for your child at DiscountMags. There are also many magazines available that feature your child’s favorite animated or storybook characters so they can enjoy their favorite characters anytime and anywhere. With our exceptional selection, it will be easy for you to pick a kid’s magazine subscription that your son or daughter will love.

Children's

DiscountMags has many fantastic computers &amp; electronic magazines online for the convenience of its customers. You will enjoy having access to so many great periodicals that can help you with any of your technological needs. There are numerous computers and electronic magazine subscriptions that will help you become more fluent with technology, whether you work with computers everyday at work or you enjoy tinkering with electronics in your free time, there is a great publication for you at DiscountMags. Each of these periodicals can help you learn more about the technology in which you are most interested. There are a wide array of periodicals available at DiscountMags from those that are dedicated to PC gaming, publications that provide you with informative reviews about the latest technology on the market, to those specifically published to help you better understand your Mac or PC operating system, you will find all the electronics and computer magazines that you need here at DiscountMags.&nbsp;

Computer & Electronic

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Entertainment & TV

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Family & Parenting

This category of food &amp; beverage magazines online at DiscountMags will ensure that you have access to high-quality information about all of your favorite foods and beverages. Whether you are looking for publications that will help you learn more about brewing beer and making wine or you would like a periodical that will provide you with interesting new recipes to make for your family and friends, you can find all of this and more on this website. There are food magazines available that are dedicated to clean eating, vegetarian meals, as well as ethnic and regional foods. You will enjoy having a magazine that matches your personal preferences in cuisine. There are also many beverage magazine subscriptions that will provide you with an education in the history of wine and others that are dedicated to the art of beer brewing. Regardless of your unique interests, you will find a magazine to suit your needs at DiscountMags.&nbsp;

Food & Beverage

You will enjoy having access to a large selection of health &amp; fitness magazines online at DiscountMags. These periodicals will provide you with the information and support that you need to meet all of your health and fitness goals. Whether you are looking to amp up your weight training routine or are completely new to working out and eating healthy, you will find all that you need in any of the publications that are offered in this category. There are health &amp; fitness magazine subscriptions for those who are training to compete in a bodybuilding competition, those that focus on natural health solutions, some are dedicated to particular types of exercises such as running or yoga, as well as many other focuses. There is a periodical for everyone at DiscountMags. If you would like to receive tips and advice specific to your gender, you can even find magazines that are published just for men or women. No matter what type of health magazines you are looking for, you will find the one for you at DiscountMags.&nbsp;

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Home & Garden

<span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">There are many fantastic magazines for men online at DiscountMags. From publications dedicated to fashion to those magazines published just for adults, there is a varied selection of periodicals available for you to browse. It doesn’t matter what kind of magazine you’re looking for; you’ll be able to find the perfect one for your taste.&nbsp;

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Men's

At DiscountMags, you will find many great news &amp; politics magazines online that will provide you with information about current events that you will enjoy reading when you have free time. If you are interested in staying up to date and informed about the latest current events, then you will benefit from having a subscription to any of the periodicals available in this category. From bi-monthly to weekly magazines, you will be able to choose the publication that is best suited for your needs. You will enjoy having the opportunity to read about politicians, foreign affairs and policies, terrorist attacks, sports, and other news. You will enjoy reading and learning about all the various topics in which you are interested through these news and politics magazine subscriptions. It will be easy for you to find great news magazines that will provide you with interesting reading in this category at DiscountMags.&nbsp;

News & Politics

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Science & Nature

There are many sports &amp; recreation magazines online at DiscountMags that will provide you with leisurely reading dedicated to all of your favorite recreational activities. There are periodicals that are focused on running, golf, bicycling, tennis, boating, dancing, and many other great activities that you may enjoy. You are guaranteed to find a publication that matches your interests in this broad category of magazines. It does not matter what you are interested in, there are periodicals available that will ensure that you will have the opportunity to read and learn about any activity in which you enjoy participating. In each of these recreation magazine subscriptions, you will be able to find tips and suggestions that will help you become better participant in the activity or sport of your choice. DiscountMags provides excellent quality recreational and sports magazines so that every customer is satisfied. Find a great magazine for you today.&nbsp;

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Travel & Leisure

DiscountMags provides its customers with numerous magazine subscription bundles that will save you money while providing you with all of the publications that you enjoy reading the most. Each of the bundles takes into consideration similar magazines that are frequently bought together by the same customers so that you never have to choose between two periodicals that you want to purchase. You will be able to enjoy reading all of your favorite magazines because of each DiscountMags bulk magazine sale available.&nbsp; Whether it is a children’s bundle, a fashion bundle, or two men’s magazines, you can find one that you will enjoy reading at DiscountMags. Each bulk magazine sale ensures that you are able to get both the magazines that you want at a great price that cannot be beat. You will love having access to all the phenomenal bundles at DiscountMags. Find the perfect magazine subscription bundles for you and your family today.&nbsp;

Value Bundles

<span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre;white-space:pre-wrap;">There are numerous magazines for women online at DiscountMags that you will find enjoyable to read. You will find publications dedicated to topics such as fashion, style, health, fitness, wedding planning, pregnancy, cooking, and much more. There are women’s magazine subscriptions for every type of woman and every kind of interest. From O, The Oprah Magazine, Women’s Health, Vogue, and a variety of other great women’s magazines, there is something for everyone.&nbsp;

You’ll also find ethnic periodicals and a variety that are published in different languages so you can find the perfect magazine that fits your culture and your interests. With the help of DiscountMags, you’ll have no trouble finding a great women’s magazine for you. Choose your subscription today!