Arno Karlen Books

Napoleon's glands: And other ventures in biohistory

By Arno Karlen

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Biography of a Germ

By Arno Karlen

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"The bacterium Borrelia burgdorferi (Bb for short) is a tiny, pale spiral, invisible to the naked eye, yet no one could invent a life so ingenious, or one so tied to so many creatures' fates. Arno...

Arno Karlen, author of Man and Microbes, focuses on a single bacterium in Biography of a Germ, giving us an intimate view of a life that has been shaped by and is in turn transforming our own.Borre...

Sexuality and homosexuality : A new view

By Arno Karlen

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Napoleon s Glands and Other Ventures in Biohistory

By Arno Karlen

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Sex education in medicine

By Arno Karlen, Harold I. Lief

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Plague s Progress

By Arno Karlen

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The Biography of a Germ

By Arno Karlen

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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.