William Tellem Books

The Story Of Zen The Zebra

By William Tellem, Robert Nailon, Avrahom Moshe Lewinson

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Zen, a brash and animated Zebra who can beat any animal in a race, chances upon a herd of his own kind who believe they are superior merely because of the order of their stripes. Race-ism not raci...

When You Gotta Go!

By William Tellem, William, Tellem, Tellem, William

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p. cm

Krazy Kathleen

By William Tellem, William, Tellem

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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.