Harry Waldman Books

"Eight of every ten Western-made films produced before World War I are considered lost, victims of recycling, war or just the highly unstable nature of nitrate film stock." "Even more surprising, 1...

Maurice Tourneur

By Waldman Harry.

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"Maurice Tourneur (1876-1926), the French and American director, actor, and theatrical manager, is the focus of this work that takes a look at his life and career in the film industry.". "He began...

Missing Reels

By Harry Waldman

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Scenes Unseen

By Harry Waldman

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Hollywood and the foreign touch

By Waldman Harry.

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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.