000 00293nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aScience
260 _aAmerican association for the advancement of science
_bWashington
_c1 Jun-30 Jun,1993
362 _a260-260
_b5113-5116
942 _2ddc
_cJ
999 _c190492
_d190492