Barbara Calamari Books

The Bible is a towering literary and cultural achievement, one of the cornerstones upon which our civilization rests. Beautifully illustrated and written, The Bible Companion is a one-of-a-kind exe...

The Bible companion

By Barbara Calamari

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Our Lady of Guadalupe in a Box

By Sandra Dipasqua, Barbara Calamari, Sandra Di Pasqua

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Super Gina Lash

By Barbara Calamari, Angela Anaconda Emission De Television, Sue Rose, Joanna Ferrone

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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.