E. C. Krupp Books

Stonehenge to von Daniken : archaeoastronomy discovers our sophisticated ancestors. First popular all-over survey of the science of archaeoastronomy - the study of the astronomies of ancient and pr...

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.

E. C. Krupp Books

Echoes of the Ancient Skies: The Astronomy of Lost Civilizations

In Search of Ancient Astronomies

In search of ancient astronomies

Beyond the Blue Horizon

Echoes of the Ancient Skies: Astronomy of Lost Civilizations

In search of ancient astronomies

Skywatchers Shamans Kings

Echoes of the Ancient Skies The Astronomy of Lost Civilizations Dover Books on Astronomy

First Flight

In Search of Ancient Astronomies

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?