John Geiger Books

The Third Man Factor: The Secret to Survival in Extreme Environments

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The third man factor is a riveting scientific and historical analysis of an extraordinary idea: that people at the very edge of death, often adventurers or explorers, sense an incorporeal being bes...

Buried in ice

By Owen Beattie

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Frozen in time

By Owen Beattie

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Frozen in Time: Unlocking the Secrets of the Franklin Expedition

By John Geiger, Owen Beattie

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Frozen in Time

By Owen Beattie, J. Geiger, O. Beattie

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Buried in ice

By Owen Beattie

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Probes the tragic and mysterious fate of Sir John Franklin's failed expedition to find the Northwest Passage in 1845.

Buried in Ice Time Quest Book

By John Geiger, Owen Beattie, Shelley Tanaka

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Dead silence

By John Geiger

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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.