000 00319nam a2200121Ia 4500
001 MPKV112065
008 120911s9999 xx 000 0 und d
082 _a500
245 _aNature Vol -324 No.6092-6094, 98
_c;
246 _aNature Vol 133
260 _aLondon
_bMac Millan Journals Ltd.
_c1986
650 _aPure Science
999 _c75355
_d75355