Catherine Porter Books

Literature and its theorists

By Tzvetan Todorov

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English Connections English Connections

By Minicz, Catherine Porter, Porter

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"Louis Marin considered the paintings and the writings of Nicolas Poussin (1594-1665), painter and theoretician of painting, an enduring source of inspiration. Since Marin did not live to write his...

Uncle Sam Activity Book audiocassette

By Carolyn Bohlman, Catherine Porter

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Crisis In The Philippines

By Catherine Porter, Catherine Lucy Porter

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Amazing Stories Magazine No. 587

By Kim Mohan

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Miller's collecting modern books

By Catherine Porter

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Miller s

By Catherine Porter

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Miller's collecting books

By Catherine Porter

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There Are Two Sexes

By Antoinette Fouque, Catherine Porter, Sylvina Boissonnas

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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.