Margaret O. Hyde Books

The Earth in Action

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Describes the causes of earthquakes and volcanoes, the formation of mountains, deserts, and icebergs, and the methods used by scientists to discover more about the earth's structure.

Hotline!

By Margaret O. Hyde

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Describes a service dealing with social problems in which people in need of help receive advice and encouragement over the telephone from trained personnel. Makes suggestions for setting up such a...

Hotline!

By Margaret O. Hyde

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Describes a social service through which people in need of help receive advice and encouragement over the telephone from trained personnel. Includes a chapter on runaways and suggestions for settin...

Atoms Today and Tomorrow,

By Margaret Oldroyd Hyde

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Animal Clocks and Compasses

By Hyde Mo

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Psychology in action

By Margaret O. Hyde

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Surveys the many aspects of psychology and includes case histories and discussions of careers in the field.

This Crowded Planet

By M.O. Mo Hyde

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For pollution fighters only

By Margaret O. Hyde

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Discusses the causes and effects of pollution and suggests projects and ideas for people interested in helping solve the problem.

Know about drugs,

By Margaret O. Hyde

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Describes various stimulants, hallucinogens, and barbiturates and their effects on the body.

Mind drugs

By Margaret O. Hyde

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Leading authorities on drugs discuss the use, abuse, and effects of marijuana, alcohol, LSD, heroin, and other drugs and the alternatives to drug use.

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.