00406nam a22001577a 4500003000400000005001700004008004100021020001800062040002100080050002100101100002600122245003300148250001300181260004400194300001000238OSt20210709063508.0210709b           ||||| |||| 00| 0 eng d  a9780195050363  cALUPE UNIVERSITY  aRA651b.L54 1994  a 	David E Lilienfield  aFoundations of epidemiology.  a 3rd ed.  aNew Yorkb 	Oxford Univ. Presscc 1994.  a371pg