Thom Holmes Books

The missing link

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A group of robot astronauts lands on a remote planet WJR 1100 and settles a colony there. Their mission is to find artifacts of their long-lost ancestors. One day they find a skeleton of a humanoid...

Gigantic long necked plant eating dinosaurs

By Thom Holmes, Laurie Holmes

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In-depth discussion of the plant-eating dinosaurs, prosauropods and sauropods, their origin, evolution and adaption, as well as causes of their extinction.

Peaceful Plant Eating Dinosaurs

By Thom Holmes, Laurie Holmes

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Horned Dinosaurs

By Thom Holmes, Laurie Holmes

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Meat Eating Dinosaurs

By Thom Holmes, Laurie Holmes

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Armored Plated and Bone Headed Dinosaurs

By Thom Holmes, Laurie Holmes

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Feathered dinosaurs

By Thom Holmes, Laurie Holmes

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Explores the connection between birds and dinosaurs, details the time and areas where these dinosaurs roamed, as well as what they ate and how they behaved, and discusses major related fossil disco...

The Dinosaur Library

By Thom Holmes, Laurie Holmes

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Prehistoric Flying Reptiles

By Thom Holmes, Laurie Holmes

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Paleontologists

By Thom Holmes

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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.