Elizabeth M. Whelan Books

Boy or Girl

By Elizabeth M. Whelan

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Sex and sensibility: A new look at being a woman

By Elizabeth M. Whelan

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A discussion, directed at the teenage woman, of human love and sexuality, stressing the need for responsibility. Includes menstruation, reproduction, male anatomy, and family planning.

Sex and sensibility: A new look at being a woman

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Pregnancy Survival Guide

By Elizabeth M. Whelan

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Preventing Cancer

By Dr. E. Whelan

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The pregnancy experience: The psychology of expectant parenthood

By Elizabeth M Whelan

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202 p. ; 22 cm

Preventing cancer

By Elizabeth M. Whelan

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Boy or Girl

By Elizabeth Whelan

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Boy or Girl

By Sc.D. Elizabeth Whelan

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A baby? ... Maybe

By Elizabeth M. Whelan

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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.