000 00311nam a2200121Ia 4500
008 160509s9999 xx 000 0 und d
020 _a0028-0836
100 _aNature
245 _aNature : 1992 : Volume 360(Nov-Dec) : Shelf 15.4
260 _bNature Publishing Group
_c1992
300 _a768p.
650 _aNature
999 _c5736
_d5736