Robert Cettl Books

Serial killer cinema

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"The release of Silence of the Lambs in 1991, which swept the major Academy Awards categories, legitimized the serial killer movie, a genre that dates back as far as the silent era. From Absence of...

Serial Killer Cinema

By Robert Cettl

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Terrorism in American cinema

By Robert Cettl

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"The American cinema of terrorism (unique subgenre with distinct thematic narrative and stylistic trends) dates back to the beginnings of the Cold War. World events soon broadened the cinema of ter...

Terrorism in American Cinema

By Robert Cettl

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King of the Turkeys

By Robert Cettl

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Shrouds Digital PDF Edition

By Gary Shipley, Robert Cettl

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Sensational Movie Monologues

By Robert Cettl

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Offensive to a Reasonable Adult

By Robert Cettl

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Sensational Movie Monologues

By Robert Cettl

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Censorship

By Robert Cettl

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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.