Reuven Hammer Books

Or Hadash

By Reuven Hammer

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Torah Revolution

By Reuven Hammer

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Torah Revolution

By Reuven Hammer

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Entering Torah Prefaces To The Weekly Torah Portion

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This engaging and informative book provides an introduction to the liturgy of the Siddur--the Jewish prayerbook. More than a "how-to" guide, this resource deals with basic issues for the modern wor...

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.