The Althouse Amazon portal: 30% more axiomatic than other leading portals. Do the math and see for yourself.

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From the May 11, 2013 Amazon Associates Report:

Mathematics: Its Content, Methods and Meaning (Dover Books on Mathematics) [Paperback]
A. D. Aleksandrov (Author), A. N. Kolmogorov (Author), M. A. Lavrent'ev (Author), Mathematics (Author)