James Day Undifferentiated Books

Examines the origins, spread, and effects of the bubonic plague in fourteenth-century England and Europe, as well as the later discovery of its cause and cure.

The Hindenburg tragedy

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Describes the development and launching of the famous airship and its disastrous accident at an airfield in New Jersey

An advanced English practice course.

By James Day, James Day Undifferentiated

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Music and Musicians in 19th Century Germany

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Englishness in Music from Elizabethan Times to Elgar Tippett and Britten

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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.