Cathryn P. Sill Books

Way Out West Lives A Coyote Named Frank

By Alan Baker, Gail Gibbons, Cathryn P. Sill, Jillian Lund

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Frank’s the coolest coyote around. Whether he’s hanging out with his friends, chasing rabbits, mixing it up with a Gila monster, or pondering the setting sun, coyote Frank is one smooth character...

About birds

By Cathryn P. Sill

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Llama Llama Sand And Sun

By Karen Katz, Lucy Cousins, MARCUS PFISTER, Anna Dewdney, Cathryn P. Sill

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Cathryn and John Sill explore slimy snails, clams, and more in their award-winning beginner's guide to mollusks, a volume from the acclaimed About... series created by author and educator Cathryn S...

About marsupials

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About Reptiles

By Cathryn P. Sill

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About Fish

By Cathryn P. Sill

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About Insects

By Cathryn P. Sill, John Sill

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About Birds

By Cathryn P. Sill

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About Insects

By Cathryn P. Sill

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About Mammals

By Cathryn P. Sill

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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.