Stefan Kanfer Books

Ball of Fire: The Tumultuous Life and Comic Art of Lucille Ball

By Stefan Kanfer

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Groucho

By Stefan Kanfer

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This definitive biography of one of the world’s greatest comedians unflinchingly yet affectionately uncovers the man behind the cigar.Here is the amazing career of the man the world recognized as G...

The Essential Groucho

By Stefan Kanfer

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Groucho Marx may be the funniest man who ever lived. Here in one volume are the classics of Marxian mayhem: excerpts from the scripts of the immortal movies, passages from his books, his articles...

Ball of Fire

By Stefan Kanfer

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As a movie actress Lucille Ball was, in her own words, “queen of the B-pluses.” But on the small screen she was a superstar–arguably the funniest and most enduring in the history of TV. In this exe...

Fear Itself

By Stefan Kanfer

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A Summer World

By Stefan Kanfer

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Ball of Fire

By Stefan Kanfer

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Somebody

By Stefan Kanfer

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Tough Without a Gun Humphrey Bogart Men in Movies and Why It Matters

By Stefan Kanfer

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Film 69 70

By National Film Critics

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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.