Robert Penn Books

American Literature the Makers and the Making

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The Man Who Made Things Out of Trees

By Robert Penn

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244 pages : 21 cm

The Racing Bicycle

By Richard Moore, Robert Penn, Daniel Benson

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A Southern Harvest

By Robert Penn Warren

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"The bicycle is one of mankind's greatest inventions and the most popular form of transport in history. Robert Penn has ridden one most days of his adult life. In his late 20s, he pedaled around th...

The Man Who Made Things Out of Trees Lib E

By Robert Penn

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It s all about the bike

By Rob Penn

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Tells the story of a journey to design and build a dream bike. From Stoke-on-Trent, where an artisan hand builds his frame, to California, home of the mountain bike, where the author tracks down th...

La bici lo es todo

By Robert Penn, Lucia Barahona

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It s All about the Bike

By Robert Penn

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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.