Roger R. Hock Books

Encyclopedia of Cancer

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Forty Studies That Changed Psychology: Explorations into the History of Psychological Research

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"Forty Studies That Changed Psychology explains 40 influential studies of human behavior during psychology's history. Each study includes an overview and history, and presents the theories underlyi...

Forty Studies that Changed Psychology: Explorations into the History of Psychological Research

By Roger R. Hock

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Human Sexuality

By Roger R. Hock

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Human Sexuality

By Roger R. Hock

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Forty Studies That Changed Psychology: Explorations into the History of Psychological Research

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Human Sexuality, 4th Edition

By Roger R. Hock

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Human Sexuality Value Package

By Roger R. Hock

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Forty Studies that Changed Psychology: Explorations into the History of Psychological Research

By Roger R. Hock

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Forty Studies That Changed Psychology: Explorations into the History of Psychological Research

By Roger R. Hock

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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.