000 00345nam a2200121Ia 4500
001 MPKV112119
008 120911s9999 xx 000 0 und d
082 _a500
245 _aScience Vol 246 No.4926-37
_c;
246 _aScience Vol 100
260 _aWashington
_bAmerican Association for the Advancement of Science
_c1989
650 _aPure Science
999 _c75409
_d75409