000 00358nam a2200121Ia 4500
001 MPKV062277
008 120911s9999 xx 000 0 und d
082 _a500
245 _aScience Vol. 230 No.4721-32
_c;
246 _aScience Vol. 230 No.4721-32
260 _aWashington
_bAmerican Association for the Advancement of Science
_c1985
650 _aPure Science
999 _c60263
_d60263