John F. Rothmann Books

Harold E. Stassen

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"In 1938 Harold E. Stassen was elected governor of Minnesota. He went on to a distinguished career as a key political figure of the 1930s, 1940s and 1950s. He is most known as being a perennial can...

Harold E. Stassen

By Alec Kirby

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Icon of Evil

By David G. Dalin, John F. Rothmann

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Icon of evil

By David G. Dalin

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Icon of Evil

By David G. Dalin, John F. Rothmann

Average: 0.00, 0 Ratings

Icon of Evil

By David G. Dalin, John F. Rothmann

Average: 0.00, 0 Ratings

A chilling, fascinating, and nearly forgotten historical figure is resurrected in a riveting work that links the fascism of the last century with the terrorism of our own. Written with verve and ex...

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.