000			00380nam a2200145Ia 4500
008			251112s9999||||xx |||||||||||||| ||und||
022			_a0036-8075
040			_aCNCLSA
100			_aDaniel E. Koshland Jr.
245		0	_aScience
260			_c7 January,1994 _bAmerican Association For the Advancement of science _aU. S. A
300			_aP.1-144
300			_bV.263
942			_cJRBV
999			_c23857 _d23857