George Barr Books

Diagnosis and Prescription

By George Barr, Ruth Rees

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228 pages : 21 cm

More Research Ideas for Young Scientists

By Barr

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Young Scientist and Sports Featuring Baseball, Football

By George Barr

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Young Scientist and the Dentist.

By Barr George

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Entertaining With Number Tricks.

By George Barr

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Gives directions for a variety of tricks involving numbers, explains why they work, and suggests techniques for using them in a performance before an audience.

Day of the Minotaur

By George Barr, Thomas Burnett Swann

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Science tricks and magic for young people

By George Barr

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Explains how to perform over twenty-five tricks, oddities, and effects, based on scientific principles, including "Fun with a Clotheshanger," "Catching Air in a Paper Bag," and "Walking Through a C...

Fun With Science for Young People

By George Barr

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Science research experiments for young people

By George Barr

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Experiments to do at home include inquiries into the cold light of fireflies, the speed of ants, magnetic poles, lung capacity, and many other things. Includes guidelines for performing accurate re...

Sports Science for Young People

By George Barr

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Explains how scientific principles affect the way athletes perform, particularly in football, basketball, and baseball.

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.