Don R. Christensen Books

Walt Disney s Uncle Scrooge.

By Jose Maria Millet Lopez, Don R. Christensen, Paul Halas, Terry Laban, Miguel Martinez, Tony Strobl, Carl Barks

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Five new adventures of Uncle Scrooge McDuck and his nephews.

Walt Disney Treasures Disney Comics

By Don R. Christensen, Floyd Gottfredson, Dick Kinney, Hubie Karp, Eirik Ildahl, Renato Canini, Al Taliaferro, Ted Osborne, Gil Turner, Walt Kelly, Daan Jippes, Romano Scarpa, Fred Milton, Bill Walsh, Carl Barks, Ted Thwaites, Earl Duvall, Carl Buettner, Wilfred Haughton

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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.