Yallop, B. D., Hohenkerk, C. Y.
Cambridge University Press
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Royal Greenwich Observatory
H. M. Stat. off.
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National Maritime Museum (Great Britain), Royal Greenwich Observatory
Her Majesty's Stationaery Office, 1968
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Royal Greenwich Observatory
H.M.S.O.
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Royal Greenwich Observatory
H.M.S.O.
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Royal Greenwich Observatory, Dyson, Frank Watson, 1868-1939
H.M.S.O.
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Royal Greenwich Observatory
His Majesty's stationery office
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Royal Greenwich Observatory
Royal Greenwich Observatory
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Royal Greenwich Observatory
J. Murray
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Royal Greenwich Observatory, Jones, H. Spencer (Harold Spencer), 1890-
His Majesty's Stationery Office
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Royal Greenwich Observatory
Printed for His Majesty's Stationery office
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Royal Greenwich Observatory
Printed by Palmer and Clayton
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