Comins, Neil F. WHAT IF THE EARTH HAD TWO MOONS? And Nine Other Thought-Provoking Speculations on the Solar System. Med. 8vo, First Edition, Second Impression; pp. [xii], 288, [4](blank); several figures, appendix, bibliography, index; original papered boards; a fine copy in dustwrapper. New York; St. Martin's Press; (2010). #64897

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