TY  - BOOK
AU  - Grewal, P S
TI  - Methods of statistical analysis
SN  - 81 207 1056 8
U1  - 001 .42 
PY  - 1990///
CY  - New Delhi
PB  - Sterling Publishers Pvt. Ltd
KW  - Data collection
KW  - interpolation
KW  - tabulation
ER  -