na INLIS000000000002859 20231116011041 0010-061600000002858 231116 0 eng 0-19-514259-4 614.4 Fie Gregg, Michael B. Field Epidemiology Second Edition / Edited by Michael B. Gregg USA : Oxford Press, 2002. Epidemiology 614.4 Gre f 451 p, ; 24 cm. 110444