David A. Adler Books

Wonders Classroom Trade Book Library Package, Grade 3

By Donald Bear, David A. Adler, McGraw Hill

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Weekly Reader Books presents Jeffrey's ghost and the fifth-grade dragon

By David A. Adler

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Bradford the ghost goes to school with Jeffrey and Laura when they begin fifth grade, and being both mischievous and invisible he creates a lot of problems.

Cam Jansen and the Mystery of the U.F.O. Cam Jansen

By David A. Adler

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Cam Jansen And the Triceratops Pops Mystery

By David A. Adler

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Cam Jansen and the Chocolate Fudge Mystery

By David A. Adler

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Cam Jansen and the Birthday Mystery

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Cam Jansen: the Mystery of the Stolen Diamonds 1

By David A. Adler

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No mystery is too great for super-sleuth Cam Jansen and her amazing photographic memory! Can Cam help catch the diamond thief? Cam and her friend Eric are sitting at the mall when the jewelry store...

Cam Jansen: the Scary Snake Mystery 17

By David A. Adler

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The Cam Jansen series is perfect for young readers who are making the transition to chapter books. The first fifteen books in the series have received updated covers, and the series redesign contin...

Cam Jansen: The Catnapping Mystery #18

By David A. Adler, David A. Adler, David A. Adler; Illustrated By Susanna Natti

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No mystery is too great for super-sleuth Cam Jansen and her amazing photographic memory! Mysteries follow super-sleuth Cam Jansen everywhere she goes...even to a hotel. Cam is visiting her aunt Mol...

Cam Jansen: the Barking Treasure Mystery 19

By David A. Adler

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No mystery is too great for super-sleuth Cam Jansen and her amazing photographic memory! Mysteries follow super-sleuth Cam Jansen everywhere she goes...even on a boat ride. Cam and Eric are enjoyin...

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.