John Howell Books

Sketches of the Sixties

By Bret Harte, Mark Twain

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Structural Adjustment & the African Farmer

By Trevor Duncan

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St. Jude s Gospel

By John Wingspread Howell

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Transitions In Mature Marriage

By John Howell, John C. Howell

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The later years of life introduce successive challenges to single and married persons in American society. Physical changes of the body, economic and social adjustment to retirement, coping with ne...

Understanding Eastern Europe

By John M. Howell

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Will s new friend

By Linda B. Ross

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Breakthroughs

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Seventy years of motorsport.

By Howell John F.I.M.I.

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John the Great

By Phil Howell

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David Byrne American Originals

By John Howell, Howell Byrne

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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.