Dianne MacMillan Books

Missions of the Los Angeles Area

By Dianne MacMillan

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My Best Friend Martha Rodriguez

By Dorothy Freeman, Dianne M. MacMillan

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Missions of the Los Angeles area

By Dianne M. MacMillan

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Charts the histories of the missions of San Gabriel Arcangel, San Buenaventura, and San Fernando Rey de Espana, and briefly describes life among the Tongva (Gabrielino) and Chumash Indians before t...

Missions of Los Angeles Area California Missions Series

By Dianne MacMillan

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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.