John C. Perry Books

United States Japan Security Relationship in the 1990 s

By Jacqueline K. Davis, Tsuyoshi Hasegawa, Akihiko Tanaka, Noboru Yamaguchi, Michael Mochizuki, James E. Auer, Seizaburo Sato, John C. Perry

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Myths & realities of American slavery

By John C. Perry

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American slavery; what a perplexing, disturbing, yet fascinating period in American history. Few topics bring about as much emotion today, stirring racial, geographical, political, and even religio...

Myths Realities of American Slavery

By John Curtis Perry

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Galloping Thunder Civil War Carbines

By John C. Perry

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Time of My Life

By John C. Perry

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Thunder in Hand Civil War Handguns

By John C. Perry

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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.