Johan Reinhard Books

The Ice Maiden

By Johan Reinhard

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The Ice Maiden

By Johan Reinhard

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Discovering the Inca Ice Maiden

By Johan Reinhard

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A first-person account of the 1995 discovery of the over 500-year-old Peruvian ice mummy on Mount Ampato and a description of the subsequent retrieval and scientific study.

The Nazca lines

By Johan Reinhard

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The Secrets of Ancient Tombs

By Johan Reinhard, Federico Puigdevall, Nicholas Reeves

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The Secrets of Ancient Ritual Sites

By Albert Canagueral, Johan Reinhard, Ricard Regas

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Machu Picchu

By Johan Reinhard

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Inca rituals and sacred mountains

By Johan Reinhard

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Inca rituals and sacred mountains

By Johan Reinhard

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The Nazca lines

By Johan Reinhard

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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.