The Theory And Practice Of Finding The Longitude At Sea Or Land: To Which Are Added, Various Methods Of Determining The Latitude Of A Place, And Varia (Hardcover) (ISBN-13: 9781020626357)

This book is a comprehensive guide to finding longitude and latitude using various methods, originally published in the mid-19th century. Andrew Mackay was a British astronomer and mathematician who applied his expertise to the practical problem of navigation. His book provides a fascinating glimpse into the science of navigation prior to the invention of modern GPS systems.

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