Ivan G. Marcus Books

The Jewish Life Cycle: Rites Of Passage From Biblical To Modern Times

By Ivan G. Marcus

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The Jewish Life Cycle: Rites of Passage from Biblical to Modern Times

By Ivan G. Marcus

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Rituals of childhood

By Ivan G. Marcus

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In medieval times, when a Jewish boy of five began religious schooling, he was carried from home to a teacher and placed on the teacher's lap. He was then asked to recite the Hebrew alphabet and li...

Rituals of Childhood: Jewish Acculturation in Medieval Europe

By Ivan G. Marcus

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Medieval Jewish Civilization

By Norman Roth

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Jewish mystical leaders and leadership in the 13th century

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Medieval Jewish Civilization

By Ivan G. Marcus

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Piety and Society

By Ivan G. Marcus

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Dat ve hevrah be mishnatam shel haside Ashkenaz

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Jewish Life Cycle

By Ivan G. Marcus

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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.