Joe Leigh Simpson Books

Obstetrics: Normal and problem pregnancies

By Joe Leigh Simpson, Jennifer R. Niebyl, Steven G. Gabbe

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Essentials of Prenatal Diagnosis

By Joe Leigh Simpson MD, Sherman Elias MD

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Genetics in obstetrics and gynecology

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I'm Pregnant!

By Lesley Regan

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Discover the ultimate companion throughout your pregnancy, with week by week support, explanations, and guides to help you understand what’s happening to you and your babyPregnancy is a remarkable...

Practical Preimplantation Genetic Testing

By Svetlana Rechitsky, Joe Leigh Simpson, Anver Kuliev

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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.