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Hampden, John (d 1891) Zetetic astronomer Proctor, Richard Anthony (1837-1888) astronomer and science writer English
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'The following is specially addressed to Mr Richard A. Proctor, Editor and Proprietor of "Knowledge"'
'The following is specially addressed to Mr Richard A. Proctor, Editor and Proprietor of "Knowledge"'
'John Hampden's challenge to Richard A. Proctor ... and to all the globe makers and globular theorists in Europe'
'John Hampden's challenge to Richard A. Proctor ... and to all the globe makers and globular theorists in Europe'