Andrew Porter Books

In between days

By Andrew Porter

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British Imperial Policy and Decolonization 1938 64

By A. J. Stockwell, A. N. Porter

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Music of 3 Seasons 1974 1977

By Andrew Porter

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European Imperialism 1860 1914

By A. N. Porter

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The Disappeared

By Andrew Porter

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A collection of stories that trace the threads of loss and displacement running through all our lives, by the acclaimed, award-winning author of The Theory of Light and Matter“What a beautifu...

The Disappeared

By Andrew Porter

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A collection of stories that trace the threads of loss and displacement running through all our lives, by the acclaimed, award-winning author of The Theory of Light and Matter“What a beautifu...

Agamemnon the Pathetic Despot

By Andrew Porter

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Tristan und Isolde

By John Luke Rose, Timothy McFarland, Anthony Negus, Nicholas John, Andrew Porter, Patrick Carnegy, Martin Swales, Richard Wagner

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Walkure The Valkyrie

By Nicholas John, Andrew Porter, Richard Wagner

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Siegfried

By Nicholas John, Andrew Porter, Richard Wagner

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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.