TY  - BOOK
AU  - "Chakrabarti,  I.M. & Laha,R.G. etc."
TI  - "Handbook of methods of applied statistics, volII :Planning of surveys & Experiments"
U1  - 311(02)   K7.2 
PY  - 0000///New York
CY  - 1967
PB  - John Wiley & Sons
ER  -