Karen Katz Books

"Baby is looking everywhere for the Christmas present--but where can it be? Little ones will love lifting the large, sturdy flaps to reveal special holiday surprises: Christmas cookies, candy canes...

Baby Love

By Karen Katz

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Roar roar baby

By Karen Katz

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Young readers are invited to lift flaps to reveal such zoo animals as giraffes, hippos, pandas, and tigers.

Splish splash baby

By Karen Katz

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Young readers are invited to lift flaps to reveal such bath toys as rubber ducks and tugboats.

Toes Ears Nose

By Marion Dane Bauer, Karen Katz

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Baby s Big Busy Book

By Karen Katz

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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.

Karen Katz Books

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?