Alison Gilligan Books

The Treasure of the Onyx Dragon

By R. A. Montgomery, Alison Gilligan

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Earthquake

By R. A. Montgomery, Alison Gilligan

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Search for the black rhino

By Alison Gilligan

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A safari trip to Kenya leads to a search for one of the rarest animals on Earth, in a book where the reader determines the path and ending of the story.

Pirate treasure of the Onyx Dragon

By Alison Gilligan

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The reader determines what happens when a letter with three clues leads to a treasure ship that has mysteriously sunk off the coast of Orcas Island.

Pirate Treasure of the Onyx Dragon

By Allison Gilligan

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Go on a swashbuckling adventure in this interactive book where YOU decide what happens next! Packed with 14 possible endings! Choose Your Own Adventure books–the 4th bestselling children&rsq...

Choose Your Own Adventure 4-Book Boxed Set Creature Feature Box (The Case of the Silk King, Inca Gold, Search for Black Rhino, Search for Mountain Gorillas)

By Shannon Gilligan

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Elige tu propia aventura 15 El tesoro del dragon de onix

By Alison Gilligan

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Reunion in Detroit

By Shannon Gilligan, Mary Agnes Dusseau, Deborah Parij, Ray Montgomery, Alison Gilligan

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Another Reunion in Detroit

By Shannon Gilligan, Mary Agnes Dusseau, Deborah Parij, Raymond Montgomery, Alison Gilligan

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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.