00922nam a2200277 i 450099100110045970753620020507111252.0970308s1985 uk ||| | eng b10173663-39ule_instLE00642159ExLDip.to Fisicaita52.9.5252.9.528523.6QB721.4Whipple, Fred L.462897The mystery of comets /Fred L. WhippleCambridge :Cambridge University Press,1985xii, 276 p., 8 p. of plates :ill. (some col.) ;24 cm.Comets.b1017366321-09-0627-06-02991001100459707536LE006 52.9.5 WHI12006000026680le006-E0.00-l- 00000.i1021282627-06-02Mystery of comets189552UNISALENTOle00601-01-97ma -enguk 41