00302nam a2200109 a 450000500170000000800410001704100080005810000210006624500510008726400420013830000120018020260716124436.0260701s1973    ii            000 0 eng d  aeng1 aBurrows, William10aText book of microbiology /cBurrows, William. 1aPhiladelphia :bW.B. Saunders,c1973.  a1035 p.