000			003940000a22001570004500
245			_aUFO's : a scientific debate
100			_aSagan, Carl, ed.
100			_aPage Thornton, ed.
260			_aIthaca _bCornell University _c1972
300			_axxxi, 310 p. : ill.
020			_a0801407400
080			_a52-121 _bU4
650			_aUNIDENTIFIED FLYING OBJECTS
041			_aEN
942			_cBK
999			_c59874 _d59874