Harold H. Bruff Books

From wiretapping American citizens to waterboarding foreign prisoners, the Bush administration has triggered an uproar over its tactics in the War on Terror--and over its justifications for using t...

Untrodden Ground

By Harold H. Bruff

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Separation of Powers Law

By Peter Shane, Harold Bruff

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Separation of Powers Law

By Neil J. Kinkopf, Harold H. Bruff, Peter M. Shane

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Separation of Powers Law

By Neil Kinkopf, Peter Shane, Harold Bruff

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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.