Karen Katz Books

Daddy hugs 1 2 3

By Karen Katz

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A loving father counts the number of hugs he gives his baby to say I love you.

The babies on the bus

By Karen Katz

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Presents lyrics to the well-known song, interspersed with additional verses about babies.

Where is baby's belly button?

By Karen Katz

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"Where are baby's hands? Under the bubbles...where are baby's eyes? under her hat!"

Toes Ears Nose A Lift the Flap Book

By Marion Dane Bauer, 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

Daddy hugs 1 2 3

The babies on the bus

Mon Premier Nouvel an Chinois

Over the Moon

Colors of Us

Counting kisses

Where is baby's belly button?

Where is baby's mommy?

Toes Ears Nose A Lift the Flap Book

Grandma and me

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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?