John P. Murtha Books

From Vietnam to 9 11: On the Front Lines of National Security

By John P. Murtha, John Plashal

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From Vietnam to 9 11: On the Front Lines of National Security, with a New Epilogue on the Iraq War

By John P. Murtha

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In 1974, John P. "Jack" Murtha became the first Vietnam combat veteran elected to Congress. In the nearly three decades since then, Congressman Murtha has been intimately involved with governmental...

Presidents at War

By John P Murtha, Gerald Astor

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From Vietnam to 9 11

By John P. Murtha

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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.