Mary Ellen Siegel Books

A two-part bibliography of over 1700 biographies of more than 1100 notable women throughout history. Part one is arranged alphabetically by subject and includes a short profile of each woman cited;...

Her Way

By Mary Ellen Siegel

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Her way

By Mary Ellen Siegel

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A collection of 260 short profiles and bibliographies of notable women throughout history and an additional bibliography of over 300 collective biographies of women.

Living with shingles

By Mary Ellen Siegel

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Living with Shingles

By Mary Ellen Siegel

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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.