David A. Adler Books

Malke's secret recipe

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In the foolish town of Chelm, Berel the shoemaker attempts to duplicate the secret recipe of Malke's potato pancakes, but his wife's interference makes his plan go awry.

Danny s doodles

By David A. Adler

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Danny is not sure what to make of Calvin Waffle, a quirky and smart new fourth grader, but when Danny convinces Calvin to use his brain power to help the baseball team, they both have a chance to b...

Danny s doodles

By David A. Adler

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Danny and Calvin decide to find out why their fourth-grade teacher, Mrs. Cakel, is suddenly behaving very strangely by not only failing to enforce her many rules, but by violating some herself.

Danny s Doodles

By David A. Adler

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Danny s Doodles

By David A. Adler

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Cam Jansen And the Birthday Mystery

By David A. Adler

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Cam Jansen and the Valentine Baby Mystery

By David A. Adler

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CAM Jansen and the Mystery of the Carnival Prize Cam Jansen Paperback

By David A. Adler

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CAM Jansen and the Mystery of the Stolen Diamonds Cam Jansen Paperback

By David A. Adler

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CAM Jansen 24 the Snowy Day Mystery

By David A. Adler

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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.