Robie H. Harris Books

Who Has What?

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First in the “Let's Talk About You and Me" series.Young children are curious about almost everything. Asking questions is one of many ways they learn about themselves and the world around the...

It s so amazing

By Robie H. Harris

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How does a baby begin? What makes a baby male or female? How is a baby born? Children have plenty of questions about reproduction and babies and about sex and sexuality, too. It s So Amazing! pro...

It s Perfectly Normal

By Robie H. Harris

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Let s Talk About Sex

By Robie H. Harris

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What s So Yummy

By Robie H. Harris

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Who

By Robie H. Harris

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Who? explores the relationships babies form with the people and things they love the most.

Happy Birth Day!

By Robie H. Harris

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A mother tells her child about its first day of life from the moment of birth through the end of the birth day.

It s Perfectly Normal

By Robie H. Harris

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It's perfectly normal

By Robie H. Harris

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Let s Talk About Where Babies Come from

By Robie H. Harris

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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.