Roy Richard Grinker Books

In the Arms of Africa: The Life of Colin Turnbull

By Roy Richard Grinker

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In the Arms of Africa: The Life of Colin M. Turnbull

By Roy Richard Grinker

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"Colin Turnbull was one of the most well-known anthropologists of the twentieth century." "Raised in the upper echelons of British society, Turnbull worked at various times as a gold miner, builder...

Unstrange Minds

By Roy Richard Grinker

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Unstrange Minds

By Roy Richard Grinker

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Toward Unified Theory Human

By Roy Richard Grinker

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Houses in the Rainforest

By Roy Richard Grinker

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Houses in the Rainforest

By Roy Richard Grinker

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Psychiatry in broad perspective

By Roy R. Grinker

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Psychosomatic Concepts

By Roy R. Grinker

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Perspectives on Africa

By Roy Richard Grinker

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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.