JOHNSGARD PAUL A Books

HUMMINGBIRDS NA

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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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Trogons And Quetzals Of The World

By Paul A. Johnsgard, JOHNSGARD PAUL A

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Grassland Grouse and Their Conservation

By Paul A. Johnsgard

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Paul Johnsgard, one of the world's leading ornithologists, has written this book as a call to action. Conservationists have seen a marked decline in the populations of North American grouse, partic...

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.