Edgar A. Porter Books

Foreign teachers in China

By Edgar A. Porter

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The people's doctor

By Edgar A. Porter

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The young George Hatem journeyed to Shanghai in 1933 to practice medicine and see the sights. The deplorable health and social conditions he found there caused his sympathies to veer quickly to the...

The people's doctor

By Edgar A. Porter

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People s Doctor

By Edgar A. Porter

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China in Oceania

By Terence Wesley Smith, Edgar A. Porter

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China in Oceania

By Terence Wesley Smith

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The Peoples Doctor George Hatem and Chinas Revolution

By Porter E.A.

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Japanese Reflections on World War II and the American Occupation

By Edgar Porter, Edgar A. Porter, Ran Ying Porter

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Japanese Reflections on World War II and the American Occupation

By Edgar A. Porter

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This book presents an unforgettable up-close account of the effects of World War II and the subsequent American occupation on Oita prefecture, through firsthand accounts from more than forty Japane...

Japanese Reflections on World War II and the American Occupation

By Edgar A. Porter, Ran Ying Porter

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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.