John Kanzler Books

Goodnight, cowboy

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When the stars hang high in the sky and the coyote howls at the moon, it's time for one little cowboy to rest his sleepy head.

Survival School

By John Kanzler, Frank Asch

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Pa, Ma, and their children take a trip to the Big Rock Candy Mountain, with its lollipop trees, chocolate fountains, and friendly bears wearing crazy socks. Music arrangement by Kathy Boyd and Mark...

The Big Rock Candy Mountain

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Class Pets Work 4

By John Kanzler, Frank Asch

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Animal Talk

By John Kanzler, Diane Namm, Hugh Lofting

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Circus Crocodile

By John Kanzler, Diane Namm, Hugh Lofting

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Doctor Dolittle s Great Adventure

By John Kanzler, Diane Namm, Hugh Lofting

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Doctor Dolittle s Magical Cure

By John Kanzler, Diane Namm, Hugh Lofting

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Doctor Dolittle and the Pirates

By John Kanzler, Diane Namm, Hugh Lofting

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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.