Douglas Harper Books

Understanding Sociology

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[The authors] have tried to make this a book students will want to read as well as a book from which they will learn about the best of contemporary and classical sociology.... The concepts of funct...

Understanding Sociology: Guide to Critical Thinking

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Understanding Sociology: Study Guide

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Chapter Tests and Answer Keys

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Good Company.

By Douglas Harper

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Working knowledge

By Douglas A. Harper

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The Italian Way: Food And Social Life

By Douglas Harper, Patrizia Faccioli, Douglas A. Harper, Douglas Harper And Patrizia Faccioli

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Outside Of Italy, The Country's Culture And Its Food Appear To Be Essentially Synonymous. And Indeed, As The Italian Way Makes Clear, Preparing, Cooking, And Eating Food Play A Central Role In The...

Working knowledge

By Douglas A. Harper

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The Cultural Study of Work

By Douglas Harper, Douglas A. Harper, Helene M. Lawson

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The Cultural Study of Work

By Douglas Harper

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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.