Peter Pefcourt Books

Purgatory Gardens: A Novel

By Peter Pefcourt, Peter Lefcourt, Lefcourt, Peter

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Sammy Dee is a mid-level Long Island mafioso in witness protection. Didier Onyekachukwu was the corrupt minister of finance of the former Upper Volta. Both men find themselves in middle age, living...

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.

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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.