TY  - BOOK
AU  - Cochran, William G.
TI  - Sampling techniques / 
SN  - 0852261217
U1  - 519.52 22
PY  - 1977///
CY  - New Delhi
PB  - Wiley Eastern Limited
KW  - Plant pathology
KW  - Sampling (Statistics)
N1  - Include bibliographical references and index
ER  -