Why I am not able to find some books using Library Pro web search procedure?
ISBN number (International Standard Book Number)
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10-digit ISBN number: the number has 9 digits + 1 check digit; the last digit could be X;
valid 10-digit ISBN numbers, examples:0316769487, 067973225X
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13-digit ISBN number: the number has 12 digits + 1 check digit;
valid 13-digit ISBN numbers, examples: 9780385521680, 9780670020485
Our program does not find the book because:
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The ISBN number contains spaces or other invalid characters (example: "-", "=", "/", SPACE, TAB, ..). Valid entries are: 0,1,2,3,4,5,6,7,8,9,X
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The ISBN number contains invalid number of digits. The correct ISBN number is a 10-digit number or 13-digit number.
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The number is a 10-digit or 13-digit but is not a valid ISBN number.
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The number is valid but the book is not listed on the selected web search site (example: old books, soft cover books are not listed in the Library Of Congress catalog...)
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You have old version of the program with old search script files. You have to update search script files: click here to update.
Use the following form to check if your ISBN number is correct:
Report problem:
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You have a valid ISBN number
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You can find a book manually (example: using amazon.com, Library of Congress, or another book search engine
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Our Library Pro is not able to find the book please let us know about this: click here
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