000			00311nam a2200121Ia 4500
008			160509s9999 xx 000 0 und d
020			_a0028-0836
100			_aNature
245			_aNature : 1986 : Volume 319(Jan-Feb) : Shelf 15.3
260			_bNature Publishing Group _c1986
300			_a826p.
650			_aNature
999			_c3974 _d3974