000 00269nam a2200085Ia 4500
001 MPKV111143
008 120911s9999 xx 000 0 und d
245 _aScience Vol 247 No 2938-2944
_c;
260 _aWashingron DC
_bAmerican Association for the Advancement of Science
_c1990
999 _c74446
_d74446