Nicholas Kollerstrom Books

The Great British Skripal Hoax

By Nicholas Kollerstrom

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The Life and Death of Paul McCartney 1942 1966

By Nicholas Kollerstrom

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Newton'S Forgotten Lunar Theory: His Contribution To The Quest For Longitude

By Isaac Newton, Nick Kollerstrom, Nicholas Kollerstrom

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In this engaging piece of detective work, Nicholas Kollerstrom has combined historical research with computer analysis to investigate long-unanswered questions about Newton's lunar theory of 1702 (...

Crop Circles Wessex Series

By Nick Kollerstrom

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Secrets of the Seven Metals

By Nicholas Kollerstrom

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Interface Astronomical Essays for Astrologers

By Nicholas Kollerstrom

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Journal for Star Wisdom

By Powell Robert

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Breaking the Spell

By Nicholas Kollerstrom

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Breaking the Spell

By Nicholas Kollerstrom

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Breaking the Spell

By Nicholas Kollerstrom, James Fetzer

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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.