00566     2200193   4500001002100000005001500021035002500036008004100061020001800102082001000120090001000130100002400140245010300164260003600267650001700303084001600320300002500336990001100361INLIS00000000000285520231116011905  a0010-061600000002854231116                           0 eng    a0-683-03269-0  a614.4  aFle c  aFletcher, Robert H.1 aClinical Epidemiology: The Essentials /cRobert H. Fletcher; Suzanne W. Fletcher; Edward H. Wagner  aUSA :bWilliams & Wilki,c1988.  aepidemiologi  a614.4 Fle c  aix, 276 p, ;c23 cm.  a110440