000			004040000a22001810004500
245			_aThe Mystery of comets
100			_aWhipple, Fred L.
100			_aGreen, Daniel, W.E.
260			_aCambridge _bCUP _c1985
300			_a288p. : ill.
020			_a0521324408
080			_a523.64 _bW5
650			_aCOMETS
650			_aASTRONOMY
650			_aSOLAR SYSTEM
041			_aEN
942			_cBK
999			_c59897 _d59897