Andrea Petrlik Books

Shoo fly

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"A very stubborn fly has set his sights on Elephant, buzzing in his ears, tickling his trunk, and flying around his tail. Can spending a special day with Mama and his little sister make Elephant fo...

Animal Airways

By Petrlik Andrea Hopgood Sally

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All Aboard The Animal Train

By Andrea Petrlik

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Hansel and Gretel

By Andrea Petrlik

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All Aboard the Animal Train

By Andrea Petrlik

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The Three Little Pigs

By Nat Lambert

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Hansel And Gretel

By Andrea Petrlik

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Hansel And Gretel

By Andrea Petrik

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Who s Hiding in the Jungle

By Linda Cole

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Doubutsuresshashuphatsushinkou kazoetemiyoukawaiidoubutsunookyakusanshikake

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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.