DAVID G. WITTNER Books

The Library of American Lives and Times

By David G. Wittner, Anne Marie Francis Kajencki, Dawn C. Adiletta

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Commodore Matthew Perry and the Perry Expedition to Japan

By David G. Wittner

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Surveys the life of Matthew Perry, a naval officer from a seafaring family, whose accomplishments are many but who is best remembered for opening Japan to trade with other nations.

Science Technology and Medicine in the Modern Japanese Empire

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Medicine; Japan

Technology and the Culture of Progress in Meiji Japan

By David Wittner

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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.