James R. Harrison Books

A review of the Greek and other inscriptions and papyri published between 1988 and 1992

By S. R. Llewelyn, James R. Harrison, E. J. Bridge

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"Collecting documentary evidence that appeared in publications between 1988 and 1992, volume 10 reproduces, translates, and reviews a selection of Greek inscriptions and papyri that focus on major...

Paul and the imperial authorities at Thessalonica and Rome

By James R. Harrison

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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.