Carl Sagan Books

Shadows of Forgotten Ancestors
Shadows of Forgotten Ancestors

By Carl Sagan

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NATIONAL BESTSELLER • “Exciting and provocative . . . A tour de force of a book that begs to be seen as well as to be read.”—The Washington Post Book WorldWorld renowned scientist Carl Sagan and ac...

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The Demon-Haunted World
The Demon-Haunted World

By Carl Sagan, Ann Druyan

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NEW YORK TIMES BESTSELLER • From the renowned astronomer and author of Cosmos comes a “powerful [and] stirring defense of informed rationality” (The Washington Post Book World) in a world where fak...

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Broca s Brain
Broca s Brain

By Carl Sagan

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Dragons of Eden R
Dragons of Eden R

By Carl Sagan

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Cosmos: The Story of Cosmic Evolution, Science and Civilisation
Cosmos
Cosmos

By Carl Sagan

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Cosmos
Cosmos

By Carl Sagan

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The Cosmic Connection: An Extraterrestrial Perspective
Cosmic Connection
Cosmic Connection

By Carl Sagan

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Planetary atmospheres
Planetary atmospheres

By Carl Editor Sagan

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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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