Lesley Gould Books

Aarons Shirt

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Aaron loves his favorite shirt and, after wearing it constantly for two years, is reluctant to admit that he has outgrown it.

Camping in the Temple of the Sun

By Deborah Gould, Lesley Gould

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A family's first camping trip is full of fun and adventure despite a series of mishaps.

Kitty Collins

By Gould Philip, Lesley Gould

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How You See Anything Is How You See Everything

By Lesley Gould, Gail Van Kleeck

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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.