Derleth, August Books

Die Masken Des Cthulhu

By August Derleth, August William Derleth, Derleth, August

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Einmal vorsichtigst gelesen, Schnitte etwas nachgebräunt, dadurch Seiten zart lichtrandig, Schutzumschlag sehr gut, sonst fleckenlos.

The Lurker At The Threshold

By August Derleth, Lovecraft H. P., H P Lovecraft, H.P. Lovecraft, Derleth, August

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August Derleth�s �Posthumous Collaborations� After Lovecraft�s death, August Derleth based a number of stories on fragments written by Lovecraft and published these as �posthumous collaborations� b...

THE LURKER AT THE THRESHOLD - The Cthulhu Mythos

By August Derleth, Lovecraft H. P., H P Lovecraft, H.P. Lovecraft, Derleth, August

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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.