Leif Pettersen Books

Bug New Zealand

By Leif Pettersen

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Backpacking with Dracula On the Trail of Vlad the Impaler Dracula and the Vampire He Inspired

By Leif Pettersen

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Romania Moldova Lonely Planet Travel Guides

By Leif Pettersen, Robert Reid

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Romania

By Leif Pettersen

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Tuscany Umbria

By Virginia Maxwell

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"This is the Italian double-act you've always dreamed of: beautiful, majestic Tuscany and Umbria, her mysterious landlocked cousin. Expect a show full of wondrous art, gorgeous scenery and stunning...

ROUMANIE ET MOLDAVIE 2E ED.

By N A

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Throwing Up

By Renee Tanner, Rachel Brougham, Leif Pettersen

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Europe on a shoestring

By Tom Masters

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Covering 44 countries, this is a guide to Europe. Including Dedicated Language chapter with key phrases in 29 languages, it offers coverage on Montenegro. It also features a Responsible Travel page...

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.