Roger Zelasny Books

Las Armas De Avalon Linea Maestra

By Roger Zelasny

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Creatures of Light and Darkness

By Roger Zelazny

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American Science Fiction: Four Classic Novels 1960-1966 (LOA #321)

By Gary K. Wolfe, SAMUEL R. DELANY, R A Lafferty, Clifford D. Simak, Jack Vance, Daniel Keyes, Roger Zelazny, Poul Anderson, Clifford D. Simak, Joanna Russ, Roger Zelasny, Poul Anderson, Clifford D. Simak, Daniel Keyes, Roger Zelazny / Gary K. Wolf, Editor

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In a deluxe collector’s edition, four classic science fiction novels from the genre’s most transformative decade—including the landmark Flowers for AlgernonThis volume, the first of a two-volume se...

Los Nueve Principes De Ambar Linea Maestra

By Roger Zelasny

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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.