000 00293nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aScience
260 _aAmerican association for the advancement of science
_bWashington
_c1 Jul-31 Jul,1991
362 _a253-253
_b5015-5018
942 _2ddc
_cJ
999 _c188402
_d188402