O Connor Karen Books

Working with horses

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An introduction, based on interviews with people in the field, to the various careers available in the horse industry including farrier, wrangler, riding instructor, and veterinarian.

Maybe you belong in a zoo!

By O Connor Karen

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Introduces zoo and aquarium careers through interviews with administrators, curators and keepers, trainers and performers, veterinarians, animal dentists, and support personnel including groundskee...

Try these on for size, Melody!

By O Connor Karen

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Text and photographs explain the steps involved in shoeing a horse.

Sharing the kingdom

By O Connor Karen

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Examines the issue of animal rights discussing the use of animals in laboratory experiments, factory farms, and in entertainment.

How to make money

By O Connor Karen

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Suggests money-making ventures and advises on how to advertise, get organized, and figure costs and profits.

Entertaining

By O Connor Karen

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A guide to inexpensive entertaining including choosing guests, planning the menu, and coping with the unexpected.

Special effects

By O Connor Karen

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Explains the filming of special effects such as bodies falling, buildings burning, and planets colliding.

Sally Ride and the new astronauts

By O Connor Karen

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Describes the experiences of the first American woman astronaut, scheduled to travel in space in 1983, and explains how astronauts are selected and trained and how it feels to fly in space.

Essentials of American government

By O Connor Karen

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Innovative grandparenting

By O Connor Karen

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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.