000 00397nam a2200145Ia 4500
008 251112s9999||||xx |||||||||||||| ||und||
022 _a0027-8424
040 _aCNCLSA
100 _aNicholas R. Cozzarelli
245 0 _aProceeding of the national academy of sciences
260 _c1999
_bThe National Academy Of Science
_aWashington
300 _aP.12211-13590
300 _bV.96
942 _cJRBV
999 _c21918
_d21918