Ralph J. Naranjo Books

Boatyards & marinas

By Ralph J. Naranjo

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The Art of Seamanship: Evolving Skills, Exploring Oceans, and Handling Wind, Waves, and Weather

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Refuges de la faune

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Un survol de cinq grands refuges de la faune : les îles Galapagos, le parc national du Manu, le parc national de Serengenti, la zone de conservation du Ngorongoro et le parc national de Virunga.

Wind Shadow west

By Ralph J. Naranjo

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Refuges de la faune

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Un survol de cinq grands refuges de la faune : les îles Galapagos, le parc national du Manu, le parc national de Serengenti, la zone de conservation du Ngorongoro et le parc national de Virunga.

Wind Shadow west

By Ralph J. Naranjo

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The Art of Seamanship

By Ralph Naranjo

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Wind, waves, weather, and water demand the practiced art of seamanship "Planning and reacting to the unanticipated are the flip sides of seamanship. This blending of pre-voyage preparedness with ef...

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.