000			00359nam a2200133Ia 4500
008			140215s9999 xx 000 0 und d
084			_aI5 _bCLA;1951
100			_aClausen, Jens.
245			_aStages in the Evolution of Plant Species / _b
260			_bCornell University Press , _aNew York : _c1951
300			_a205p :
650			_aBotany
942			_2cc _cBK
999			_c10252 _d10252