Dan Gallagher Books

The pleistocene redemption

By Dan Gallagher

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Florida s Great Ocean Railway

By Dan Gallagher

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From 1905 to 1916, thousands of laborers and engineers engaged in an amazing construction project—building a railroad line from Miami to Key West. Every mile of the Key West Extension of the Florid...

The Pleistocene redemption

By Dan Gallagher

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In The Pleistocene Redemption cloning techniques and Fossil Gene Redemption methodology, pioneered in the closing years of the 20th Century, have enabled geneticist Kevin G. Harrigan to regenerate...

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.