Hal Marcovitz Books

Ron Howard

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A detailed biography of Ron Howard, whose acting career began when he was just two years old, grew into television and film success, and led to superstardom as a director of feature films. Aboard...

The Munich Olympics

By Hal Marcovitz

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Provides an account of the terrorist attacks against Israeli athletes during the 1972 Olympic games, profiling some of the individuals involved and exploring the political and historical reasons fo...

The Munich Olympics

By Hal Marcovitz

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The Oklahoma City Bombing Great Disasters Reforms and Ramifications

By Hal Marcovitz

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Guardians of Safety

By Hal Marcovitz

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Cesar Chavez

By Hal Marcovitz

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A biography of the union activist who led the struggle of migrant farm workers for better working conditions.

Pancho Villa Great Hispanic Heritage

By Hal Marcovitz

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Cesar Chavez The Great Hispanic Heritage

By Hal Marcovitz

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Eleanor Holmes Norton

By Hal Marcovitz

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Profiles Washington, D.C.'s member of the United States House of Representatives who, in a previous position as head of the Equal Employment Opportunity Council, wrote the guidelines on sexual harr...

Will Hobbs

By Hal Marcovitz

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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.