C. L. N. Ruggles Books

Astronomy in Prehistoric Britain and Ireland

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"Do prehistoric stone monuments in Britain and Ireland incorporate deliberate astronomical alignments, and if so, what is their purpose and meaning? Here, for the first time this topic, a subject o...

Formal Methods in Standards

By C. L. N. Ruggles

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Records in Stone

By C. L. N. Ruggles

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Records in Stone

By C. L. N. Ruggles

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Megalithic astronomy

By C. L. N. Ruggles

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Astronomy and society in Britain during the period 4000-1500 B.C.

By C. L. N. Ruggles, A. W. R. Whittle

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Astronomies and Cultures

By C. L. N. Ruggles, Oxford International Symposium On Archaeoastronomy 3rd 1990 St. Andrews Scotland

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Formal Methods in Standards

By C. L. N. Ruggles

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This report was produced by the Formal Methods in Standards Working Group of the British Computer Society. This group was set up to promote the practical application of formal methods in improving...

Handbook of Archaeoastronomy and Ethnoastronomy

By C. L. N. Ruggles

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How human communities interpret what they perceive in the sky is vital in fulfilling humankind’s most basic need to comprehend the universe it inhabits, both from a modern scientific perspective an...

Handbook of Archaeoastronomy and Ethnoastronomy

By C. L. N. Ruggles

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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.