Reuven P. Bulka Books

Pirkey Avoth - Chapters of the Sages - is one of the most well known texts in Jewish tradition. It contains the ethical and moral principles guiding the Jewish way of life as handed down by the sag...

Judaism on pleasure

By Reuven P. Bulka

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What You Thought You Knew about Judaism

By Reuven P. Bulka

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Finding Meaning in Life

By Joseph B. Fabry, Reuven P. Bulka

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Best Kept Secrets of Judaism

By Reuven P. Bulka

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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.