William Kerr Books

Mark of the Devil

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Navy Special Warfare officer Matt Berkeley is on a new hunt. Under the seas off the coast of Florida, in a corpse-filled German U-boat, he finds a document lost for more than half a century, which...

Regula

By William S. Kerr

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The Red Hand Matt Berkeley Novels

By William Kerr

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Compendio biblico Portavoz de bolsillo

By William F. Kerr

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Regulating the Liabilities of Agricultural Biotechnology

By George G. Khachatourians, William A. Kerr, Stuart Smyth, Peter W. B. Phillips

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Kerr s Melbourne Almanac and Port Phillip Directory for 1841

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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.