Kal K. Korff Books

The Roswell UFO Crash
The Roswell UFO Crash

By Kal K. Korff

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Spaceship...Aliens...Cover-up or Hoax? What Really Happened at Roswell?New witnesses! New evidence! A shocking conclusion!Did an extraterrestrial spacecraft really crash in the New Mexico desert in...

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Spaceships of the Pleiades
Spaceships of the Pleiades

By Kal K. Korff

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The Roswell UFO crash
The Roswell UFO crash

By Kal K. Korff

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Secret Wars
Secret Wars

By Kal K. Korff

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The Making Of Bigfoot: The Inside Story
The Making Of Bigfoot: The Inside Story

By Greg Long, Kal K. Korff, Long, Greg, Korff, Kal K.

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Bigfoot! Huge, hairy, foul smelling, this legendary apelike animal continues to captivate the publics imagination. This fascination hinges on a single piece of motion-picture film shot in northern...

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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.

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