000 004510000a22001690004500
020 _a3540503892
060 _a100
082 _a574.88 JEF
100 _aJeffrey, G.A.
100 _aSaenger, W.
245 _aHydrogen bonding in biological structures
260 _aBerlin, Springer Verlay
260 _c1991
300 _a569
650 _aHydrogen bonding/ carbohydrates/ amino acids/ zuitter ion/ base pairing/ water molecule
942 _cBK
999 _c354630
_d354630