James MacLachlan Books

Charles Babbage: And the Engines of Perfection

By Bruce Collier

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Traces the life and work of the man whose nineteenth century inventions led to the development of the computer.

Galileo Galilei: First Physicist

By James H. MacLachlan

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Examines the personality, thought processes, scientific discoveries, and life of an important figure who helped to shape our understanding of the natural world.

Galileo Galilei

By James MacLachlan, James H. MacLachlan

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Examines the personality, thought processes, scientific discoveries, and life of an important figure who helped to shape our understanding of the natural world.

Nicolaus Copernicus

By James MacLachlan, Owen Gingerich

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Galileo Galilei

By James MacLachlan

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Charles Babbage

By Bruce Collier, James MacLachlan

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Children of Prometheus

By James H. MacLachlan

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Galileu Galilei

By James Maclachlan

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Charles Babbage

By Bruce Collier, James MacLachlan

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Charles Babbage

By Bruce Collier, James MacLachlan

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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.