John A. Connell Books

Ruins of war

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"In the winter of 1945, seven months after the Nazi defeat, Munich is in ruins. Mason Collins--a former Chicago homicide detective, U.S. soldier, and prisoner of war--is now a U.S. Army criminal in...

Spoils of Victory

By Rob Shapiro, John A. Connell

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Madness in the Ruins

By John A. Connell

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Bones of the Innocent

By John A. Connell

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Spoils of victory

By John A. Connell

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"From the author of Ruins of War comes an electrifying novel featuring U.S. Army criminal investigator Mason Collins, set in the chaos of post-World War II Germany. When the Third Reich collapsed,...

Ruins of War A Mason Collins Novel

By John A. Connell

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Spoils of Victory

By John A. Connell

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Haven of Vipers

By John A. Connell

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Good Night Sweet Daddy O

By John A. Connell

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Good Night Sweet Daddy O

By John A. Connell

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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.