English
Book digitized by Google and uploaded to the Internet Archive by user tpb. · Preface and "Notes taken at the discovery of Mr. Harrison's time-keeper," by Nevil Maskelyne, Astronomer Royal: p. v-xvii
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Ebook · The principles of Mr. Harrison's time-keeper; with plates of the same · Harrison, John, 1693-1776, Maskelyne, Nevil, 1732-1811, Great Britain. Commissioners of Longitude · Internet Archive
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