Hilda Simon Books

Courtship of Birds

By Hilda Simon

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The Splendor of Iridescence: Structural Colors in the Animal World

By Hilda Simon

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Chameleons and other quick-change artists.

By Hilda Simon

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Describes the characteristics and behavior of a variety of creatures with the ability to change colors rapidly, discussing psychological, as well as physiological or biochemical, explanations for t...

Strange breeding habits of aquarium fish

By Hilda Simon

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The courtship of birds

By Hilda Simon

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The date palm, bread of the desert

By Hilda Simon

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Describes the history, importance, and biology of the date palm and notes the requirements for its successful cultivation.

Bird and flower emblems of the United States

By Hilda Simon

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Text and illustrations introduce the bird and flower emblems of all fifty of the United States.

Easy identification guide to North American snakes

By Hilda Simon

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The private lives of orchids

By Hilda Simon

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Frogs and toads of the world

By Hilda Simon

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Describes the physical characteristics, habits, and natural environment of various frogs and toads.

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.