Penelope Leach Books

Child Care Today

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From the universally admired author of the bestselling classic Your Baby and Child: “a masterful work [that could] revolutionize the way America cares for its young children and bring about a...

Your Baby & Child

By Penelope Leach

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The classic—beloved, trusted, best-selling—guide to baby and child care completely redesigned and revised for a new generation of parents • From Penelope Leach, "a luminary in the...

Baby and Child

By Penelope Leach

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Babyhood

By Penelope Leach

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Child Care Today

By Penelope Leach

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The Physical Punishment of Children Policy Practice Research

By Penelope Leach

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When Parents Part

By Penelope Leach

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A practical, comprehensively researched guide to doing the best for your child during and after separation or divorce—from the bestselling author of Your Baby & Child, one of the world&rsqu...

Transforming Infant Wellbeing

By Penelope Leach

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Transforming Infant Wellbeing

By Penelope Leach

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Parent School

By Lorin Biederman, Penelope Leach, Jerry Biederman

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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.