Claes Sundin Books

Luftwaffe fighter aircraft in profile

By Claes Sundin

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More Luftwaffe Fighter Aircraft In Profile

By Christer Bergstrom, Claes Sundin, Claes; Bergstrom, Christer Sundin

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Contains 124 extraordinary color profiles, portraying examples of nearly all types of single-seated fighter aircraft used by the Luftwaffe in World War II. All of the detailed profiles represent ai...

Deutsche Jagdflugzeuge 1939 1945 in Farbprofilen.

By Christer Bergstrom, Claes Sundin

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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.