TY  - BOOK
AU  - Cochran, William Gemmel.
TI  - Planning and analysis of observational studies
T2  - Wiley series in probability and mathematical statistics
U1  - 519.92 
PY  - 1983///
CY  - New York
PB  - Wiley
KW  - Análisis de varianza
KW  - Diseños experimentales
N1  - D43-26
ER  -