ROBERT FREDERICK Books

Ships boats

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Climb aboard some of the most extraordinary ships to sail the seven seas in this question- and-answer book.

My first book on the human body

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Discover Snakes

By ROBERT FREDERICK, Robert Frederick Ltd. (Bath, England)

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Sharks Are One Of The Sea's Most Misunderstood And Feared Creatures. In This Series, Readers Uncover The Secrets Of These Sleek Fish. Learn How To Identify The Many Different Types Of Sharks, And W...

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.