Emil PETAJA Books

Star Quest / Doom Of The Green Planet

By Emil PETAJA, Dean R. Koontz, Koontz, Dean R. & Petaja, Emil

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Star Quest:"In a universe that had been ravaged by a thousand years of interplanetary warfare between the star-shattering Romaghins and the equally voracious Setessins, there seemed now but one thi...

Nebula Award Stories 4

By Richard Wilson, MICHAEL MOORCOCK, KATE WILHELM, KAREN ANDERSON, James E. Gunn, Donald A. Wollheim, Paul Lehr, H. H. Hollis, Daniel F. Galouye, Emil PETAJA, Anne McCaffrey, Harlan Ellison, John W. Campbell Jr, Willis Everett McNelly, Forrest J. Ackerman, Alva Rogers, Brian W. Aldiss, J. Francis McComas, Poul Anderson, Isaac Asimov, Terry Carr, Ted Carnell

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Book by Poul anderson

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Star Quest/Doom Of The Green Planet

By Emil PETAJA, Dean R. Koontz, Koontz, Dean R. & Petaja, Emil

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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.