Warren Blumenfeld Books

Jumbo shrimp & other almost perfect oxymorons

By Warren S. Blumenfeld

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Pretty ugly

By Warren S. Blumenfeld

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Homophobia

By Warren J. Blumenfeld

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The hatred of lesbians, gay males, and bisexuals remains an "acceptable" prejudice in our society, despite the widespread damage it causes in all of our lives. Inviting sexual minorities and hetero...

Readings for Diversity and Social Justice

By Madeline L. Peters, Maurianne Adams, Warren Blumenfeld, Carmelita Castaneda, Heather W. Hackman

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LGBTQ History Educators Guide

By Warren Blumenfeld

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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.