Richard a Proctor
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Half-Hours with the Stars. a Plain and Easy Guide to the Knowledge of the Constellations
Proctor, Richard A
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Half-Hours With the Telescope: Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction [1873 ]
Proctor, Richard A. (Richard Anthony)
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Transits of Venus: A Popular Account of Past and Coming Transits From the First Observed by Horrocks 1639 to the Transit of 2012, Also an Account of ... the Transit of 1882 (Classic Reprint)
Richard A. Proctor
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A treatise on the Cycloid and all forms of Cycloidal Curves and on the use of such curves in dealing with the motions of planets, comets, &c. and of matter projected from the sun
A Proctor, Richard
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The Spectroscope and Its Work
Proctor, Richard A (Richard Anthony)
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Knowledge, Vol. 3
Richard A. Proctor
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