Hedda Garza Books

The Watergate investigation index

By Hedda Garza

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The Watergate investigation index

By Hedda Garza

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Leon Trotsky

By Hedda Garza

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Traces the life of one of the men behind the Russian Revolution of 1917, from his early years, through his leadership in the Communist regime, to his exile as "the most unwanted man in the world."

Francisco Franco

By Hedda Garza

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Traces the life of the Spanish leader who controlled Spain from 1939 until his death in 1975.

Mao Zedong

By Hedda Garza

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A biography of the man who transformed China from a culture steeped in ancient traditions into a revolutionary communist state.

Salvador Allende

By Hedda Garza

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Follows the life of the man who served in Chile as the first Marxist to be freely elected to lead a nation of the Western Hemisphere, until military leaders overthrew his government in 1973.

Joan Baez Hispanics of Achievement

By Hedda Garza

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Frida Kahlo Hispanics of Achievement

By Hedda Garza

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African Americans and Jewish Americans

By Hedda Garza

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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.