TY  - GEN
AU  - Des Raj
TI  - Design of sample surveys
T2  - Mc graw hill series in probablity & statistics
SN  - 07-051155-1
U1  - 001.  424 DES;1 
CY  - Newyork, Mc Graw-Hill Book Co
KW  - Sample surveys-design/survey-design/sampling-techniques
ER  -