Hap Gilliland Books

Mystery tracks in the snow

By Hap Gilliland

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Mystery tracks in the snow

By Hap Gilliland

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Alone in the wilderness

By Hap Gilliland

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A Native American high school student is challenged to spend three months alone in the Beartooth Wilderness Area of Montana, living as his ancestors had lived.

No One Like a Brother Indian Culture

By Hap Gilliland

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How the Dogs Saved the Cheyennes

By Hap Gilliland

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Indian Canoeing Nature Lore Skills

By Hap Gilliland, Pierre Pulling

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Legends of Chief Bald Eagle

By Hap Gilliland

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The Dark Side of the Moon

By Hap Gilliland, Tom Kovach

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We Live on an Indian Reservation Understanding American Indian Cultures

By H. Gilliland

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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.