000 00293nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aScience
260 _aAmerican association for the advancement of science
_bWashington
_c1 Jan-31 Jan,1993
362 _a259-259
_b5091-5095
942 _2ddc
_cJ
999 _c190494
_d190494