John E. Butler Books

The ruminant immune system

By International Symposium On The Ruminant Immune System 1980 Plymouth N.H.

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The ruminant mammals include animals that have been domesticated and allied to human civilization for at least five thousand years. Exclusively herbivorous, except for the errant billy goat, the ru...

Natural Disasters

By John E. Butler

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Moving into Maps Sunshine Geography

By John E. Butler

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Strategy and Human Resources Management

By Gerald R. Ferris, Nancy K. Napier, John E. Butler

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Immunochemistry of solid-phase immunoassay

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Natural disasters

By John E. Butler

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Man-made disasters

By John E. Butler

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Natural disasters

By John E. Butler

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Man Made Disasters

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The Adventures of SPIKER DUDE

By John E. Butler, V.A. Wheaton, Randal P. Calais

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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.