Willis John T. Books

Isaiah

By Willis John T., John Thomas Willis

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The message of Old Testament history

By Willis John T.

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Diverse water symbols in the Psalms

By Willis John T.

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Instruction shall go forth

By Willis John T.

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The study of the eighth-century prophets has experienced major changes over the past five decades. In these articles, published during a time when traditional methods of reading these texts gave wa...

Yahweh and Moses in conflict

By Willis John T.

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Presidential elections in Maryland

By Willis John T.

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Presidential elections in Maryland

By Willis John T.

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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.