000			00377 a2200133 4500
008			141010b1996 xxu||||| |||| 00| 0 eng d
082			_a551.3
100			_aVersehuur, Gerrit L.
245			_aImpact: _bthe threat of comets and Astroids / _cGerrit L.Versehuur
260			_aNew York : _bOxford University Press, _c1996.
300			_a237p.
650			_aComets
650			_aAsteroids
999			_c6153 _d6153