000 00310nam a2200121Ia 4500
008 160509s9999 xx 000 0 und d
020 _a0028-0836
100 _aNature
245 _aNature : 1969 : Volume 221(Jan-Mar) : Shelf 15.1
260 _bNature Publishing Group
_c1969
300 _a1280p.
650 _aNature
999 _c823
_d823