Charles Klasky Books

World Geography

By Norman John Greville Pounds, Charles Klasky

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Considers the influences of such things as natural resources, labor supply, and political forces on economic activities in all the areas of the world.

World geography

By Charles Klasky

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Rugs have naps (but never take them)

By Charles Klasky

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A series of sentences introduces homonyms--words spelled and pronounced alike but different in meaning.

Rugs Have Naps But Never Take Them

By Charles Klasky

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Budgeting Money Management Skills

By Charles Klasky

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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.