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According to the 2001 edition of the International ISBN Agency's official user manual, [49] the ISBN-10 check digit (which is the last digit of the 10-digit ISBN) must range from 0 to 10 (the symbol 'X' is used for 10), and must be such that the sum of the ten digits, each multiplied by its (integer) weight, descending from 10 to 1, is a ...
The registration group or identifier group is the second element in a 13-digit ISBN (first element in a 10-digit ISBN) and indicates the country, geographic region, or language area where a book was published. [1] The element ranges from one to five numerical digits. [1]
ISBNs come in two styles, containing 10 digits or 13 digits, and are known as "ISBN-10" and "ISBN-13" numbers. Please use the ISBN-13 if both are provided by the original work. The ISBN-13 is often found near the barcode and will start with either 978- or 979-.
Using different weights on neighboring numbers means that most transpositions change the check digit; however, because all weights differ by an even number, this does not catch transpositions of two digits that differ by 5 (0 and 5, 1 and 6, 2 and 7, 3 and 8, 4 and 9), since the 2 and 5 multiply to yield 10. The ISBN-10 code instead uses modulo ...
An Amazon Standard Identification Number (ASIN) is a 10-character alphanumeric unique identifier assigned by Amazon.com and its partners for product identification within the Amazon organization. [1] They were designed in 1996 by Rebecca Allen, an Amazon software engineer, when it became clear that Amazon was going to sell products other than ...
President Joe Biden ordered a national day of mourning in January and flags to be displayed at half-staff following President Jimmy Carter's death.
The new presidential administration has an opportunity to enact meaningful reforms that prioritize patient care, personal responsibility and the strength of American innovation.
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