Amazon the ISBN number product ID ISBN or UPC ISBN, UPC, GTIN, EAN, ASIN ASIN EAN-13 bar code http://www.amazon.com/gp/seller/asin-upc-isbn-info.html ISBN or UPC Amazon Standard Identification Number http://www.amazon.com/gp/seller/asin-upc-isbn-info.html ASIN http://www.amazon.com/gp/seller/asin-upc-isbn-info.html EAN-13 bar code ASIN Amazon.com Amazon Standard Identification Numbers (ASINs) http://www.amazon.com/gp/seller/asin-upc-isbn-info.html 10 letters and/or numbers ISBN in place of the ASIN