Robert Beachy Books

Gay Berlin: Birthplace of a Modern Identity

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"A detailed historical look at the surprising ways in which the uninhibited urban sexuality, sexual experimentation and medical advances of pre-Weimar Berlin created and molded our modern understan...

Gay Berlin

By Robert Beachy

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Winner of Randy Shilts AwardIn the half century before the Nazis rose to power, Berlin became the undisputed gay capital of the world. Activists and medical professionals made it a city of firsts—t...

Soul of Commerce

By Robert Beachy

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Ich bin schwul

By Robert Beachy

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Who Ran the Cities

By Robert Beachy, Ralf Roth

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Who Ran the Cities

By Robert Beachy, Ralf Roth

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Who Ran the Cities

By Robert Beachy, Ralf Roth

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Ich bin schwul

By Robert Beachy

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Pious Pursuits

By Robert Beachy, Michele Gillespie

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Who Ran the Cities

By Robert Beachy, Ralf Roth

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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.