00668nam a2200169Ia 4500008004100000082002300041100003000064245005400094260003300148300002200181490006000203700003700263700004000300942001200340952012900352999001700481250225b        |||||||| |||| 00| 0 eng d  a519.50184bC663.PA  aCochran, William G.95604  aPlanning and analysis of observational studiesb/  aNew York:bJohn Wiley,c1983  axiii, 145p. Index  aWiley series in Probability and Mathematical Statistics  aMoses, Lincoln E.eeditor.95605  aMosteller, Frederickeeditor.95606  2ddccBK  0010406519_501840000000000_C663_PA70918635aISIbISId1998-10-05l0o519.50184 C663.PApDP18821r2019-02-14 00:00:00yBK  c15259d15259