TY  - BOOK
AU  - Raj,Des
TI  - The design of sample surveys
T2  - McGraw-Hill series in probability and statistics
SN  - 0070511551
U1  - 110.433 
PY  - 1971///, c1972]
CY  - New York
PB  - McGraw-Hill
KW  - Muestreo (Estadística)
ER  -