Stefan Kanfer Books

The Essential Groucho: Writings by, for and about Groucho Marx

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Tough Without a Gun

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In this comprehensive biography of one of the great movie icons of our time, Stefan Kanfer, the acclaimed biographer of Lucille Ball, Groucho Marx, and Marlon Brando, illuminates the life and caree...

Somebody

By Stefan Kanfer

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Stefan Kanfer, acclaimed biographer of Lucille Ball and Groucho Marx, now gives us the definitive life of Marlon Brando, seamlessly intertwining the man and the work to give us a stunning and illum...

Tough without a gun

By Stefan Kanfer

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Eighth Sin

By Stefan Kanfer

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Fear Itself

By Stefan Kanfer

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Ball of Fire

By Stefan Kanfer

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Tough Without a Gun

By Stefan Kanfer

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Somebody

By Stefan Kanfer

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Somebody

By Stefan Kanfer

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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.