David Farley Books

An Irreverent Curiosity

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Read David Farley's posts on the Penguin Blog.A tour through the centuries and through a bizarre Italian town in search of an unbelievable relic: the foreskin of Jesus Christ In December 1983, a...

Radiant Relief

By David Farley, P. Brendon Lundberg

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Nowhere 6

By David Farley, Nowhere Magazine, Merrill Gilfillan, David Quammen, Nick Flynn

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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.