000			00305nam a2200109Ia 4500
008			251112s9999||||xx |||||||||||||| ||und||
040			_aCNCLSA
245		0	_aProceeding of the national academy of sciences
260			_cDecember, 1987 _bNational Academy Of Science _aU. S. A
300			_bV.88
942			_cJRBV
999			_c36743 _d36743