David A. Adler Books

Cam Jansen: the Mystery of the Stolen Corn Popper 11

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The Cam Jansen series is perfect for young readers who are making the transition to chapter books. The first ten books in the series have received updated covers, bringing new life to these perenni...

Cam Jansen: the Triceratops Pops Mystery 15

By David A. Adler

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Cam Jansen: the Ghostly Mystery 16

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 to a ticket booth. Cam, Eric, and Aunt M...

Cam Jansen and the Tennis Trophy Mystery 23

By David A. Adler

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Cam and Eric's gym teacher just had his office walls painted. But Cam notices that the color of his walls isn't the only difference-his prized tennis trophy is missing! Who could have taken it?...

Cam Jansen: the School Play Mystery 21

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 conti...

Bones and the Dog Gone Mystery

By David A. Adler

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Detectives are supposed to find things, but one day at the park, Bones loses just about everything: his magnifying glass, his dog, and even his detective bag. Can Detective Jeffrey Bones find the t...

Bones and the Cupcake Mystery

By David A. Adler

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Detective Jeffrey Bones is always ready to help when a mystery strikes. This time, there is a missing cupcake at school. Armed with a code breaker, walkie-talkie, and clever jokes, Jeffrey Bones se...

Young Cam Jansen and the Lions' Lunch Mystery

By David A. Adler, Susanna Natti

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A field trip to the zoo is fun for Cam Jansen and her classmates—until lunchtime. Everyone else’s sandwich is safely delivered, but Danny can’t find his anywhere! Only Cam and her amazing memory ca...

One Yellow Daffodil: A Hanukkah Story

By David A. Adler

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Cam Jansen: Cam Jansen and the Sports Day Mysteries

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 to her school's Sports and Good Nutritio...

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.