000 00358nam a2200121Ia 4500
001 MPKV058828
008 120911s9999 xx 000 0 und d
082 _a500
245 _aScience Vol 192 No.4234-42
_c;
246 _aScience Vol 192 No.4234-42
260 _aWashington
_bAmerican Association for the Advancement of Science
_c1976
650 _aPure Science
999 _c56816
_d56816