Nicholas Johnson Books

Set in the 1920s, Alone Against the Tide is a solo horror adventure for the Call of Cthulhu roleplaying game. You take on the role of an investigator traveling to the affluent, scenic, and remote l...

Perreira Tales Chasing The 108

By Nicholas Johnson, Kaert Saaver, Mercynth Johnson, Walter Johnson, Christopher Brown

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Hunting Girls

By Nicholas Johnson

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Development of the WinSMASH 2010 Crash Reconstruction Code

By National Highway Traffic Safety Administration U.S. Staff, Nicholas Johnson, Hampton Gabler, Carolyn Hampton

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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.