000 00262nam a2200121Ia 4500
008 230501s1991 xx 000 0 eng d
082 _a579
100 _aPUROHIT
245 0 _aMICROBIOLOGY
260 _bWASHINGTON, D.C.
_c1991
300 _a562
942 _2ddc
_cBB
999 _c5258
_d5258