Jeffrey Spier Books

Late Antique and Early Christian gems

By Jeffrey Spier

Average: 0.00, 0 Ratings

Treasures of the Ferrell collection

By Jeffrey Spier

Average: 0.00, 0 Ratings

Late Byzantine rings 1204 1453

By Jeffrey Spier

Average: 0.00, 0 Ratings

Picturing the Bible: The Earliest Christian Art

By Jeffrey Spier, Herbert L. Kessler

Average: 0.00, 0 Ratings

Picturing the Bible explores the vast tradition of Christian art at its very beginnings in the third century A.D., just as Christianity was emerging from its outlawed, clandestine status to become...

Rings of the Ancient World

By Jeffrey Spier, Jack Ogden

Average: 0.00, 0 Ratings

Late Antique and Early Christian Gems

By Jeffrey Spier

Average: 0.00, 0 Ratings

San Marco and Venice

By Jeffrey Spier

Average: 0.00, 0 Ratings

Ancient Gems and Finger Rings

By Jeffrey Spier, J. Paul Getty Museum.

Average: 0.00, 0 Ratings

Beyond the Nile

By Jeffrey Spier, Timothy F. Potts, Sara E. Cole

Average: 0.00, 0 Ratings

Egypt, the most ancient of the Mediterranean civilizations, inspired neighboring cultures with its art, religion, and learning. Already by around 3000 BC, cultural and artistic exchanges between Eg...

Picturing the Bible

By Jeffrey Spier

Average: 0.00, 0 Ratings

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.