Karyn Henley Books

Noah s Zoo Karyn Henley Playsong Books

By Karyn Henley

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Five Little Ladybugs Karyn Henley Playsong Books

By Karyn Henley

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Day by day kid's Bible

By Karyn Henley

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A simplified version of the Bible, from Creation to Revelation, with a pictorial time line showing biblical and world events.

Hatch!

By Karyn Henley

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Briefly describes the nesting habits of such diverse egg-laying creatures as the whale shark, Siamese fighting fish, grasshopper, emperor penguin, ostrich, duckbilled platypus, and others.

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.