Andrew M. Gleason Books

Back by popular demand, the MAA is pleased to reissue this outstanding collection of problems and solutions from the Putnam Competitions covering the years 1938-1964. Problemists the world over, in...

William Lowell Putnam Mathematical Competition Problems Solutions

By Andrew M. Gleason, L. M. Kelly, R. E. Greenwood

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Elementary Course In Probability For The Cryptanalyst Cryptography

By Andrew M. Gleason

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Calculus

By William G. McCallum, Daniel E. Flath, Joseph Thrash, Andrew M. Gleason, Jeff Tecosky Feldman, David Lovelock, Karen R. Rhea, David O. Lomen, Patti Frazer Lock, Thomas W. Tucker, Andrew Pasquale, Sheldon P. Gordon, Douglas Quinney, Deborah Hughes Hallett

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Calculus

By William G. McCallum, Andrew M. Gleason, Deborah Hughes Hallett

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.