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008 160509s9999 xx 000 0 und d
020 _a0028-0836
100 _aNature
245 _aNature : 1987 : Volume 325(Jan-Feb) : Shelf 15.3
260 _bNature Publishing Group
_c1987
300 _a834p.
650 _aNature
999 _c4101
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