David Porter Books

Mother Teresa, the early years

By David Porter, Porter David

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A biography of the nineteenth-century evangelist who traveled extensively gathering converts to Christianity.

Ideographia

By David Porter

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"From the first successful Jesuit mission in 1583 until the disastrous failure of the British trade embassy in 1816, China's cultural practices transfixed the attention of Western philosophers, the...

Winning tennis for girls

By David Porter

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According to the Tennis Industry Association, more than 1 million girls aged 12 to 17 play tennis. At the highest levels of women's tennis, stars such as Venus and Serena Williams, Monica Seles, an...

Winning Tennis for Girls Winning Sports for Girls

By David Porter

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Winning Weight Training for Girls Winning Sports for Girls

By David Porter

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Winning Weight Training for Girls Winning Sports for Girls

By David Porter, Gerry Green

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Winning Gymnastics for Girls Winning Sports for Girls

By David Porter

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The Inklings handbook

By Colin Duriez

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U.S. economic foreign aid

By Porter David

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Journal of a Cruise Made to the Paciific Ocean in the United States Frigate Essex in the Years Eighteen Twelve Eighteen Thirteen and Eighteen Fourte

By David Porter, Porter David

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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.