000			00420nam a2200145Ia 4500
008			130520s9999 xx 000 0 und d
044			_aUSA
245			_aPNAS
260			_bNational Academy of Sciences _aWashington _c1980
270			_a2101 Constitution Avenue, _bNW, Washington, DC 20418 _c
310			_a52/Yr (Subscription Foreign)
362			_a101(45), 2004+
362			_aJan,2004 - Dec,2011
942			_cLI _2udc
999			_c159393 _d159393