00756nam0-22002891i-450-990000045130403321000004513FED01000004513(Aleph)000004513FED0100000451320011111d--------km-y0itay50------baitay-------001yyOur neighbour worldsV. A. Firsoff.New YorkPhilosophical library1953336 p.ill.23 cmAstronomia520Firsoff,V. A.3294ITUNINARICAUNIMARCBK99000004513040332113 F 13 1022304FINBCFINBCOur neighbour worlds112529UNINAING01