Proctor, Richard A. (Richard Anthony), 1837-1888. Other worlds than ours; the plurality of worlds studied under the light of recent scientific researches, by Richard A. Proctor.

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Proctor, Richard A. (Richard Anthony), 1837-1888.

Other worlds than ours; the plurality of worlds studied under the light of recent scientific researches, by Richard A. Proctor.

Astronomy.