Douglas Menville Books

Ancestral voices

By Douglas Alver Menville

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The Boyhood Days of Guy Fawkes

By Douglas Menville, R. Reginald

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A fictionalized account of the life of Guy Fawkes, the infamous Englishman whose involvement in a conspiracy to destroy Parliament in 1605 as revenge for the laws discriminating against Catholics r...

Phantasmagoria

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Worlds of never

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Science Fiction and Fantasy Literature Vol 2

By Douglas Menville, Mary A. Burgess, R. Reginald

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Forgotten Fantasy

By Douglas Menville

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Forgotten Fantasy

By Douglas Menville

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Forgotten Fantasy

By Douglas Menville, Robert Reginald, William R. Bradshaw

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Futurevisions

By Mary A. Burgess, R. Reginald, Douglas A. Menville

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Under Egypt

By Douglas Menville

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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.