James Knapp Books

State of Decay

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View our feature on James Knapp’s State of Decay.Just because you're dead doesn't mean you're useless... A thrilling debut novel of a dystopian future populated by a new breed of zombie T...

MEDIEVAL ROMANCE

By James F. Knapp, Peggy A. Knapp

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Medieval Romance

By James Knapp, Peggy Knapp

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The Silent Army

By James Knapp

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Read James Knapp's blogs and other content on the Penguin Community. The pulse-pounding sequel to State of Decay Federal agent Nico Wachalowski must stop Samuel Fawkes from awakening his own priv...

Element Zero

By James Knapp

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Technologically reanimated corpses are frontline soldiers engaged in a neverending war. Agent Nico Wachalowski uncovered a conspiracy that allowed Samuel Fawkes, the scientist who created them, to...

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.