000 00392nam a2200133Ia 4500
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040 _aCNCLSA
100 _aNicholas R. Cozzarelli
245 0 _aProceedings of the National Academy Of Sciences of the United States of America
260 _cMay 5, 1990
_bpergamon press
_aNew York
300 _aP. 607-1138
300 _bV. 213
942 _cJRBV
999 _c20342
_d20342