Stephen Usher Books

Historians of Greece and Rome

By Stephen Usher

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The reappearance of Christ in the etheric

By Rudolf Steiner

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xvi, 233, [3] p. : 22 cm

Xenophon

By J Antrich, Xenophon, Stephen Usher

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Herodotus Persian Wars

By Herodotus, Stephen Usher

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Cicero s speeches

By Stephen Usher

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"During his hours of leisure from the law-courts and from politics, Cicerco found time to theorize about oratory and rhetoric, and from these studies there emerged the image of the ideal orator. Th...

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.