Mark Sachner Books

West Germany Children of the World

By Mark Sachner, Marylee Knowlton

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U.S.A. Children of the World

By Mark Sachner, Marylee Knowlton

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What s down There

By Mark Sachner, Ruth Owen, Alex Waldron

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Having a Baby

By Mark Sachner, Ruth Owen

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India

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Presents the life of a young Indian boy from Jodhpur, Rajasthan, describing his school, home, family, amusements, and some of the customs and celebrations of his country.

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.