Leslea Newman Books

A beguiling array of felines from A to Z makes learning the alphabet the cat’s pajamas.Adorable cat with eyes of gold.Baby cat just two weeks old.From curious to elegant, grouchy to inquisiti...

123 Cats: A Cat Counting Book

By Leslea Newman

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Count on cats as a fun way to learn numbers—in rhyming spreads with expressive appeal for animal lovers of all ages.Cat Number One has nothing to do . . .Until she makes friends with Cat Numb...

Heather has two mommies

By Leslea Newman

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When Heather goes to playgroup, at first she feels bad because she has two mothers and no father, but then she learns that there are lots of different kinds of families and the most important thing...

Gloria goes to Gay Pride

By Leslea Newman

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Gloria and her two mothers join a parade celebrating Gay Pride Day.

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.