TY  - BOOK
AU  - CRAVEN John
TI  - Distribution of the product
T2  - Studies in economics;16
SN  - 0043390153
U1  - X:31, L9/SC 
PY  - 1979///
CY  - London
PB  - George Allen & Unwin       
N1  - Bibliography : P.177-183
ER  -