Mary Engel Books

Psychopathology in childhood
Psychopathology in childhood

By Mary Engel

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Sweetie Pie
Sweetie Pie

By Mary Engel, Mary Engelbreit

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Health Care
Health Care

By Mary Engel

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Health Care
Health Care

By Mary Engel

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What Should Go on the Internet
Keeping America Safe
Keeping America Safe

By Mary Engel

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Keeping America Safe
Keeping America Safe

By Mary Engel

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Ruth Orkin: A Photo Spirit
Ruth Orkin: A Photo Spirit

By Mary Engel, Nadine Barth, Ruth Orkin, Geoff Dyer, Kristen Gresh

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Ruth Orkin is a legend of street photography, her atmospheric pictures taken in cities such as Florence, New York and London still shape the image of these metropolises today. But Orkin's specialty...

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Photo Soup 2

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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.

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