Allen Hoffman Books

Small worlds

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The little town of Krimsk is about to observe Tisha B'Av, the calamitous day of mourning marking the destruction of the ancient holy Temple in Jerusalem. The beloved rebbe has mysteriously emerged...

Big league dreams

By Allen Hoffman

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Two for the devil

By Allen Hoffman

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It is Rosh Hashanah - the Jewish New Year and Day of Judgement - in Moscow during the Stalinist purges of 1936. In the Lubyanka secret police prison, senior investigator Grisha Shwartzman masterful...

Small Worlds

By Allen Hoffman

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Kagan s Superfecta

By Allen Hoffman

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Kagan's superfecta and other stories

By Allen Hoffman

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Kagan's superfecta and other stories

By Allen Hoffman

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Big League Dreams Small Worlds

By Allen Hoffman

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Two for the Devil Small World Series Volume 3

By Allen Hoffman

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Kagan s Superfecta

By Allen Hoffman

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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.