000			00331nam a2200121Ia 4500
008			251112s9999||||xx |||||||||||||| ||und||
040			_aCNCLSA
245		0	_aProceedings Of The National Academy Of Science
260			_cJuly 1, 1993 _bNational Academy Of Science _aU. S. A
300			_aP.5879-6894
300			_bV.90
942			_cJRBV
999			_c24929 _d24929