TY  - BOOK
AU  - Gupa,C.B.
AU  - Gupa,C.B.
AU  - Ratna,V.
TI  - Statistical Calculations
U1  - GUP 
PY  - 1970///
CY  - Agra
PB  - Ram Prasad and Sons.
KW  - Statistical Calculations
ER  -