Charles I. Coombs Books

Teen Age Treasure Chest Of Sports Stories

By Charles I. Coombs

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Gold and other precious metals

By Charles Ira Coombs, Herbert S. Zim

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Discusses the desirable properties and uses of gold, silver, and platinum; describes the nineteenth-century gold rush; discusses techniques of mining and refining gold; and presents an amateur's gu...

Ultralights

By Charles I. Coombs

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Be a Winner in Basketball

By Charles I. Coombs

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Auto Racing

By Charles I. Coombs

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Project Apollo

By Charles I. Coombs

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Passage to Space

By Charles I. Coombs

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Be a Winner in Ice Hockey

By Charles I. Coombs

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Be a Winner in Football

By Charles I. Coombs

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Be a Winner in Tennis

By Charles I. Coombs

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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.