TY  - BOOK
AU  - COCHRAN G.WILLIAM 
AU  - WILLIAM G. COCHRAN 
TI  - SAMPLING TECHNIQUES 
SN  - 471029394
U1  - 107 COW S  
PY  - 1909///
CY  - CANADA 
PB  - COCHRAN
UR  - http://dpsraj.bestbookbuddies.com/
ER  -