John C. Poirier Books

The tongues of angels

By John C. Poirier

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Marcan priority without Q

By Jeffrey Peterson, John C. Poirier

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"This book discusses the composition of the synoptic gospels from the perspective of the Farrer hypothesis, a view that posits that Mark was written first, that Matthew used Mark as a source, and t...

Marcan Priority Without Q

By Chris Keith, John C. Poirier, Jeffrey Peterson

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Invention of the Inspired Text

By John C. Poirier

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Marcan Priority Without Q

By John C. Poirier, Jeffrey Peterson

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Invention of the Inspired Text

By Chris Keith, John C. Poirier

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Marcan priority without Q

By Jeffrey Peterson, John C. Poirier

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Tongues of Angels

By John Poirier

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Wissenschaftliche Untersuchungen Zum Neuen Testament 2. Reihe The Tongues of Angels

By John C. Poirier

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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.