Fritz Leiber Books

50 Short Science Fiction Tales

By Isaac Asimov

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The dealings of Daniel Kesserich

By Fritz Leiber

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Tor is pleased to present in print for the first time this short novel of cosmic dread and Lovecraftian horror. It is a story of science gone awry, of strange dimensions - of love and death. Kesser...

The Dealings of Daniel Kesserich

By Fritz Leiber

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Dark Ladies: 'Conjure Wife' and 'Our Lady of Darkness'

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Big Time

By Fritz Leiber

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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.