On Saturday, I found myself looking at an illustrated book at Amazon. Later, I went back and looked closer at the same book and saw something unusual in the book's description that I don't recall ever seeing before with any book FULL 10-1 NUMBER LINE PRESENT. Two more Buying Choices for this book also say FULL NUMBER LINE. I think this refers to a book's ISBN, although I'm not certain. One other seller put in their description 1st print 10 9 8 7 6 5 4 3 2 1. Very odd.
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