John Gregory Books

John Gregory s Writings on Medical Ethics and Philosophy of Medicine Philosophy and Medicine Classics of Medical Ethics

By L.B. McCullough, John Gregory

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A Call to Prayer

By John Gregory, Caryl Micklem, Anthony Coates

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Pulp Classics

By John Gregory Betancourt

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A collection of eighty essays exploring the personal beliefs of a diverse assortment of contributors, both famous and unknown, who reflect on their faith, the evolution of their beliefs, and how th...

Legacy of the Stars

By John Gregory, William Shakespeare

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Leningrad's ballet

By Gregory John

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Giselle immortal

By Gregory John

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General Crook in the Indian Country

By John Gregory Bourke

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Leningrad s Ballet

By John Gregory, Alexander Ukladnikov

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Brangwen The Poet and the Dancer

By John Gregory, John Masefield

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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.