TY  - BOOK
AU  - Cochran, William G
AU  - Moses, Lincoln e
AU  - Mosteller, Frederick
TI  - Planning and Analysis of Observational Studies
SN  - 0471887196
U1  - 001.42 
PY  - 1983///
CY  - New York
PB  - John Wiley & Sons
KW  - Experimental Design
KW  - Analysis of Variance
ER  -