TY  - BOOK
AU  - Govindarajulu Zakkula
TI  - Elements of sampling theory and methods
SN  - 0137435762 (hbd)
U1  - B2817, N9 
PY  - 1999///
CY  - Upper Saddle River, New Jersey 
PB  - Prentice Hall
KW  -  Sampling method
KW  - Statistics
N1  - Bibliographical references 401-407p
ER  -