000 00405nam 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 _cJanuary 2, 1981
_bNational Institutes of Health
_aU.S.A
300 _aP. 1-266
300 _bV. 211
942 _cJRBV
999 _c32979
_d32979