Howard Langer Books

American Indian quotations

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World War II: An Encyclopedia of Quotations

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This is a reference book that looks at World War II in a whole new way. It is all quotations: from speeches, news accounts, memoirs, and interviews. It is captured documents and material from Ultra...

America in Quotations

By Howard J. Langer

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The Vietnam War: An Encyclopedia of Quotations

By Howard J. Langer

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The History of the Holocaust

By Howard Langer

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This is a book of quotations about the Holocaust. In this collection - spanning from early anti-Semitic teachings to post-Holocaust observations, and arranged chronologically - Howard Langer attemp...

The World War II 100

By Howard Langer

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The World War II 100

By Howard Langer

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World War II

By Howard J Langer

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Competition law of the United States

By Howard Langer

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America in Quotations

By Howard Langer

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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.