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EAN-13	9780138221638
Product Name	Soldiers In Politics: Military Coups And Governments (Prentice-Hall Contemporary Comparative Politics Series)
Language	English
Category	Book / Magazine / Publication
Short Description	Hardcover
Amazon.com	Buy on Amazon ~ 0138221634
SKU	ACAMP_BOOK_USEDVERYGOOD_0138221634
Price New	409.09 US Dollars    (curriencies)
Price Used	39.94 US Dollars    (curriencies)
Weight	10.88 ounces    (convert)
Author	Eric A. Nordlinger
Page Count	224
Binding	Paperback
Published	09/01/1976
Long Description	When Nordlinger first wrote this book in the late 1970s, it broke much ground by treating military regimes as objects of serious, objective study, rather than subjective criticism.
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SHA256	a187c48569e5306400d640739213b5b693e7b6425f5c5f6d43f352a3b57e1e8c
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Article of interest

ISBN stands for International Standard Book Number. Originally this was a 10 digit number known as ISBN-10, but has been replaced with a 13 digit version known as ISBN-13 (aka EAN-13) to better fit in with the industry standard product numbering system.

The ISBN system offers a unique numbering system for books and publications of various types. ISBN offers 9 identification digits for each book or publication and one check digit. ISBN-13 expands the available number set by doubling the available numbers. You might think that the extra three digits would more than double the available numbers but ISBN is limited within the EAN-13 numbering system and will always start with 978 or 979 as the first three digits, leaving only 9 more digits for the actual identification digits and again the last digit is the check digit.

Any ISBN-10 number can be converted to ISBN-13. Any ISBN-13 number that starts with 978 can be converted back to ISBN-10. ISBN-13 numbers that start with 979 cannot be converted to ISBN-10.

The conversion process from ISBN-10 to ISBN-13 is a rather simple one. Start with the first 9 digits of the ISBN-10 number, place 978 in front and calculate the new check digit using the standard EAN check digit calculation.

If you want to calculate the check digit for ISBN-10, that is done using a MOD-11 calculation that is very different than the EAN check digit process.

• Lets start with ISBN-10 number 1-5905-9332-?
• Each digit is multiplied by its position for digits 1-9
• 1x1 + 5x2 + 9x3 + 0x4 + 5x5 + 9x6 + 3x7 + 3x8 + 2x9 = 180
• Now get the remainder 180 mod 11 = 4
• Now return the mod 11 again... 4 mod 11 = 4
• If the results is 10, return the letter X otherwise return the digit.
• For our example, the final number is 1-5905-9332-4

ISBN-1-5905-9332-4

Look at the number above and below the barcode. You will see that except for the last digit in the ISBN number, all of the digits exist in the 13 digit version shown under the barcode right after the 978 and just before the new check digit of 5.

Now you can see how easy it is to convert between ISBN-10 and ISBN-13.