William B. F. Ryan Books

Noah s Flood

By William Ryan, William B. F. Ryan, Walter Pitman

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For thousands of years, the legend of a great flood has endured in the biblical story of Noah and in such Middle Eastern myths as the epic of Gilgamesh. Few believed that such a catastrophic deluge...

Deep Drilling Results in the Atlantic Ocean

By Manik Talwani, William Hay, William B. F. Ryan

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Nuh Tufani

By William B. F. Ryan

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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.