000			00357nam a2200121Ia 4500
008			251112s9999||||xx |||||||||||||| ||und||
040			_aCNCLSA
245		0	_aProceedings of the National Academy Of Sciences of the United States of America
260			_cJuly, 1988 _bProc. Natl. Acad. Sci. _aU.S.A
300			_aP. 4945-6226
300			_bV. 85
942			_cJRBV
999			_c11167 _d11167