John R. Harris Books

An angler's entomology

By J. R. Harris

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Recent Advances in Sexually Transmitted Diseases And AIDS Recent Advances in Sexually Transmitted Diseases and Aids

By John R. Harris

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Adaptations of Roman epic in medieval Ireland

By Harris John R.

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Chaos Cosmos and Saint Exupery s Pilot

By John Harris, Harris John R.

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"John Harris attempts to address this stunning author's unique quality with full regard for his evasion of categories. He contends that Saint-Exupery is in fact naively, perhaps sublimely simple an...

Chaos Cosmos and Saint Exupery s Pilot

By John Harris

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Why boys shoot

By Harris John R., Helen Ruth Andretta

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Defying the odds

By Harris John R.

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A BODY WITHOUT BREATH

By JOHN R HARRIS

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Accidental grandeur

By Harris John R.

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An angler's entomology.

By J. R. Harris

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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.