John Frederick Schwaller Books

The first letter from New Spain

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The founding of la Villa Rica de la Veracruz (the rich town of the True Cross) is prominently mentioned in histories of the conquest of Mexico, but scant primary documentation of the provocative ac...

A Guide to Confession Large and Small in the Mexican Language 1634

By Bartolome De Alva, Lu Ann Homza

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The Fifteenth Month

By John F. Schwaller

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The church and clergy in sixteenth-century Mexico

By John Frederick Schwaller

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Origins of church wealth in Mexico

By John Frederick Schwaller

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The Church in Colonial Latin America Jaguar Books on Latin America

By John F. Schwaller

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The Church In Colonial Latin America

By John Frederick Schwaller, John F. Schwaller

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The Church in Colonial Latin America is a collection of essays that include classic articles and pieces based on more modern research. Containing essays that explore the Catholic Church's active so...

Sahagun at 500

By John Frederick Schwaller

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Francis in the Americas

By John Frederick Schwaller

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The first letter from New Spain

By John Frederick Schwaller

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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.