Marilyn Tolhurst Books

Tells about famous explorers such as Magellan, Columbus, Cortes, and Neil Armstrong and includes instructions for making a compass, a survival kit, a sea chest, and other items.

The Stone Street Flashbacks

By Marilyn Tolhurst

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Life on a Royal Estate

By Gail Durbin, Marilyn Tolhurst

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The Explorer's Handbook: How to Become an Intrepid Traveler

By Marilyn Tolhurst

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Tells about famous explorers such as Magellan, Columbus, Cortes, and Neil Armstrong and includes instructions for making a compass, a survival kit, a sea chest, and other items.

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.