000 00293nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aScience
260 _aAmerican association for the advancement of science
_bWashington
_c1 May-30 Jun,1990
362 _a248-248
_b4955-4963
942 _2ddc
_cJ
999 _c189344
_d189344