Marcus Weeks Books

How Many Elephants in A Blue Whale

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The Sociology Book

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Learn about how we organize our society in The Sociology Book.Part of the fascinating Big Ideas series, this book tackles tricky topics and themes in a simple and easy to follow format. Learn about...

The Art Book

By DK

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Learn about key movements like impressionism, cubism and symbolism in The Art Book.Part of the fascinating Big Ideas series, this book tackles tricky topics and themes in a simple and easy to follo...

The Religions Book

By DK

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Learn about the primal beliefs to the world’s great faiths in The Religions Book.Part of the fascinating Big Ideas series, this book tackles tricky topics and themes in a simple and easy to follow...

Heads up psychology

By Marcus Weeks

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An introduction to psychology surveys the ideas of over sixty famous psychologists, discussing topics ranging from psychoanalysis and intelligence to groundbreaking experiments and mental disorders.

Heads up philosophy

By Marcus Weeks

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Demystifies complex philosophical ideas and debates in a comprehensive format that introduces the major theories of such great philosophers as Socrates, Aristotle, Plato, Friedrich Nietzsche, Epicu...

Music

By Marcus Weeks

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Hotel hobbies

By Marcus Weeks

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Office Pastimes

By Marcus Weeks

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Religion in Minutes

By Marcus Weeks

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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.