Doug Cushman Books

Oslo Learns to Swim Rex and Oslo

By Doug Cushman

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Aunt Eater Loves a Mystery Book and Tape

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Pigmares

By Doug Cushman Author Illustrator

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When a young pig watches monster movies before bed, he's in for some tail-curling nightmares! From the Phantom Hog of the Opera to the Porker from the Black Lagoon, seventeen poems put a pigmarish...

Amazing Trail of Seymour Snail

By Lynn E. Hazen, Doug Cushman

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Happy Birthday Gus

By Doug Cushman, Jacklyn Williams

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Happy Easter Gus

By Doug Cushman, Jacklyn Williams

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Happy Halloween Gus

By Doug Cushman, Jacklyn Williams

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Happy Thanksgiving Gus

By Doug Cushman, Jacklyn Williams

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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.