JAY HOWARD GELLER Books

Jews in Post Holocaust Germany 1945 1953

By Jay Howard Geller

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Three Way Street

By Jay H. Geller, Leslie Morris

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The Scholems: A Story Of The German-Jewish Bourgeoisie From Emancipation To Destruction

By JAY HOWARD GELLER

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The evocative and riveting stories of four brothers—Gershom the Zionist, Werner the Communist, Reinhold the nationalist, and Erich the liberal—weave together in The Scholems, a biography of an emin...

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.