Harry Oliver Books

Bubble Gum and Hula Hoops

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The fascinating and funny origins of everyday objects-bliss for history hounds, language lovers and trivia buffs. In this delightful volume, Harry Oliver reveals the most unusual and unexpected s...

Flying by the Seat of Your Pants

By Harry Oliver

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Let's "cut to the chase" and "make no bones about it"-this book will have you "pleased as punch." Sowing your wild oats, throwing in the towel, painting the town red...Harry Oliver reveals the fa...

March Hares and Monkeys Uncles

By Harry Oliver

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March hares and monkeys uncles

By Harry Oliver

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Black Cats & Four-Leaf Clovers

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Cross your fingers, knock on wood, and clutch your rabbit's foot a little tighter. In this charming and endlessly diverting book, Harry Oliver delves into the stories behind the traditions and su...

Desert Rat Scrapbook Compendium 4

By Harry Oliver, Bill Powers, Dick Oakes

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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.