Audrey Penn Books

Bill and Pete San

By Jean Little, Tomie DePaola

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Wemberly worried

By Kevin Henkes

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A mouse named Wemberly, who worries about everything, finds that she has a whole list of things to worry about when she faces the first day of nursery school.

A Pocket Full of Kisses

By Barbara Leonard Gibson, Audrey Penn

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The Whistling Tree by Audrey Penn Softcover

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The Kissing Hand CD and Paperback book

By Audrey Penn

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From acorn to oak tree How things grow

By Jan Kottke

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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.