David Dudenhoefer Books

Costa Rica 98

By David Dudenhoefer, Fodor S

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Panama

By David Dudenhoefer

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"Fodor’s correspondents highlight the best of Panama, including Panama City's neighborhoods and nightlife, the Panama Canal, and the beautiful coasts. Our local experts vet every recommendat...

Fodor s Peru

By Kelly Kealy, Molly Moker, David Dudenhoefer

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A guide to visiting Peru that provides information on restaurants, hotels, sights, attractions, activities, and more and includes photographs, maps, and trip-planning advice and tools.

The Panama Traveler

By David Dudenhoefer

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Fodor s Peru

By Salwa Jabado, David Dudenhoefer

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Fodor s essential Peru

By David Dudenhoefer

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Fodor s Peru

By David Dudenhoefer

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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.