Paul T. Heyne Books

""Art Economists Basically Immoral?" and Other Essays on Economics, Ethics, and Religion is a collection of Heyne's essays focused on an issue that preoccupied him throughout his life and which con...

Are economists basically immoral?

By Paul T. Heyne

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Practical Dictionary of Electrical Engineering and Chemistry in German English and Spanish

By Paul T. Heyne

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Practical Dictionary of Electrical Engineering and Chemistry in German English and Spanish

By Paul T. Heyne

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Praktisches Worterbuch der Elektrotechnik und Chemie in Deutscher

By Paul T. Heyne, Ernesto Sanchez Rosal

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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.