000 00293nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aScience
260 _aAmerican association for the advancement of science
_bWashington
_c1 Aug-31 Aug,1991
362 _a253-253
_b5019-5023
942 _2ddc
_cJ
999 _c189864
_d189864