Carl R. Jennings Books

Monstrosities

By James Dorr, Liam Hogan, Keyan Bowes, Carl R. Jennings, Edward Bryant, Ray Daley, Brian Trent, Larry Hodges, Mark Pantoja, Juliana Rew

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Urban Temples of Cthulhu Modern Mythos Anthology

By Allen Griffin, Kevin Wetmore, Khurt Khave, M. S. Swift, Guy Riessen, M. C. Bluhm, James Pratt, Brian H. Seitzman, Carl R. Jennings, Stuart Conover, Steven A. Roman, David Acord, Jill Hand, Aaron Besson, David F. Gray, Jeff C. Stevenson, Jaap Boekestein, First United Church Of Cthulhu, Kelda Crich

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Monstrosities Third Flatiron Anthologies Book 22

By Keyan Bowes, Jennifer R. Povey, James Dorr, Russell Hemmell, Robert Bagnall, Liam Hogan, Joseph Sidari, Martin M. Clark, Ville Merilainen, Julia August, Sita C. Romero, Carl R. Jennings, Edward Bryant, Barry Charman, Ray Daley, Salinda Tyson, Brian Trent, Sharon Diane King, Larry Hodges, Mark Pantoja, Juliana Rew

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Mister Posted and the Brain Freeze Goddess

By Carl R. Jennings

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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.