George Sullivan Books

Pro football and the running back

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Discusses some of football's outstanding running backs, the basic skills required of a successful runner, roles of a running back besides carrying the ball, and other team positions.

Better ice skating for boys and girls

By George Sullivan

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Discusses basic and advanced ice skating skills, equipment, and three styles of skating; competitive figure, power, and speed skating.

Better Ice Hockey for Boys

By George Sullivan

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Home run!

By George Sullivan

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Discusses in detail the dramatic baseball play, the homerun, and the feats of Ruth, Aaron, and other superior long-ball hitters.

Better gymnastics for girls

By George Sullivan

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Presents instructions for maneuvers in four women's gymnastic events: floor exercise, balance beam, vaulting, and uneven parallel bars. Discusses the history of gymnastics and includes sources for...

This is pro basketball

By George Sullivan

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An introduction to the history, rules, equipment, teams, and well-known players of professional basketball. Also includes a section of all-time records.

Supertanker!

By George Sullivan

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Describes the historical development, design, handling, and problems of the enormous tankers which cruise the seas, carrying oil to a thirsty world.

Better basketball for girls

By George Sullivan

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Discusses the history, equipment, and techniques of women's basketball and includes a summary of the rules.

This is pro soccer

By George Sullivan

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Modern Olympic superstars

By George Sullivan

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Biographies of six Olympic gold medal champions of the 1976 games.

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.