George E. Haggerty Books

Philip Brett's groundbreaking writing on Benjamin Britten altered the course of music scholarship in the later twentieth century. This volume is the first to gather in one collection Brett's search...

Encyclopedia Of Gay Histories And Cultures

By George Haggerty, George E. Haggerty, George Haggerty, Bonnie Zimmerman, George E. Haggerty

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A rich heritage that needs to be documented Beginning in 1869, when the study of homosexuality can be said to have begun with the establishment of sexology, this encyclopedia offers accounts of the...

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.