Paul A. Johnsgard Books

Ducks in the Wild

By Paul A. Johnsgard

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HUMMINGBIRDS NA

By Paul A. Johnsgard, JOHNSGARD PAUL A

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Paul A. Johnsgard's Hummingbirds of North America is the only book devoted to the identification, distribution, and biology - both individual and comparative - of all hummingbirds that breed in Nor...

NA OWLS

By JOHNSGARD PAUL A

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The Pheasants of the World

By Paul Johnsgard

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Among the most important of all bird groups, pheasants account for the most abundant domesticated species (the domestic fowl), the most extensively hunted upland game bird (the common pheasant), an...

North American owls

By Paul A. Johnsgard, Johnsgard Pa

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"Paul Johnsgard has completely updated his highly praised 1988 edition of North American Owls, and by adding twelve species of Mexican owls he now covers the entire continent of North America.". "...

Hawks Eagles and Falcons of North America

By Paul A. Johnsgard, Johnsgard Pa

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Crane music

By Paul A. Johnsgard

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Cormorants, darters, and pelicans of the world

By Paul A. Johnsgard

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Arena birds

By Paul A. Johnsgard

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Trogons And Quetzals Of The World

By Paul A. Johnsgard, JOHNSGARD PAUL A

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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.