Mary Adrian Books

Wildlife in the Antarctic

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Describes the varied animal life on the coldest continent, focusing on the Adélie penguin, elephant seal, Weddell seal, leopard seal, and blue whale.

American Prairie Chicken Preserve Our Wildlife No 7

By Mary Adrian

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A day and a night in the Arctic

By Mary Adrian

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Describes the interdependency of Arctic animals and how nature maintains its balance in that region.

Wildlife on the Watch

By Mary Adrian

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Describes the activities of a variety of birds, reptiles, and mammals during one day in the southwest desert, with emphasis on their interaction and territorial behavior.

The fireball mystery

By Mary Adrian

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Three children hunt for a meteorite they saw fall from outer space but run into some unexpected complications.

The ghost town mystery

By Mary Adrian

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A brother and sister keep uncovering new mysteries as they search for the unclaimed gold strike that will enable their father to restore the Colorado ghost town of Woodpecker Creek.

The lightship mystery

By Mary Adrian

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Twelve-year-old Dick, helping aboard his father's fishing troller for the summer, agrees to do what he can to aid the government in uncovering a diamond smuggling operation.

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.