Roger B. Yepsen Books

City Trains

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An illustrated history of the various types of public transportation used in cities including horsecars, streetcars, trolleys, interurbans, cable cars, subways, light rails, and monorails.

Smarten up!

By Roger B. Yepsen

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Tips for getting maximum power from your brain with food, exercise, and other external forces. Provides test and experiments to determine how each of our individual minds works.

Apples

By Roger B. Yepsen, Roger Yepsen

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Train talk

By Roger B. Yepsen

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An introduction to the language of railroading, in which words, colored lights, flags, semaphore arms, coded whistles, hand signals, flares, and explosive alarms are used to guide trains and announ...

Train talk

By Roger B. Yepsen

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How to boost your brainpower

By Roger B. Yepsen

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How to Boost Your Brain Power

By Roger B. Yepsen

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Lightning

By Roger B. Yepsen

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Tornadoes

By Roger B. Yepsen

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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.