TY  - BOOK
AU  - Snedecor George W
AU  -  Cochran William G
TI  - Statistical methods
SN  - 0813815606
U1  - B28, H6;K7 
PY  - 1967///
CY  - Iowa
PB  - Iowa state Univ. Press       
KW  - Statistics
N1  - Bibliography at the end of each chapter; Appendix :  P541-75
ER  -