Stephen J. Edberg Books

Observing Comets, Asteroids, Meteors, and the Zodiacal Light

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This guide shows you how to make successful and valuable observations and records of comets, asteroids, meteors, and the zodiacal light. For each topic the historical background and current scienti...

Observing Eclipses Transits and Occultations Practical Astronomy Handbooks

By Stephen J. Edberg, Jay Anderson

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Research Amateur Astronomy

By Stephen J. Edberg

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Observing Comets Asteroids Meteors And The Zodiacal Light

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Research Amateur Astronomy. Proceedings of the Symposium on Research Amateur Astronomy 7 12 July 1991 La Paz Baja California Sur Mexiko.

By Stephen J. Edberg

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International Halley watch amateur observers' manual for scientific comet studies

By Stephen J. Edberg

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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.