David Halperin Books

Coming of age in the turbulent 1960s, Danny Shapiro copes with family troubles and loneliness by inventing a fantastical alternate life in which he falls in love with a beautiful thief and protects...

Merkabah in Rabbinic Literature

By David Halperin

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Intimate Alien

By David Halperin

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San Foucault. Para Una Hagiografia Gay

By David Halperin

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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.