TY  - BOOK
AU  - DAS R K
TI  - Optical investment planning :  A reappaisal of mahalonobis-Fel'dman strategy.   
SN  - 9023722973
U1  - X:75:(B), L4/SC 
PY  - 1974///
CY  - Rotterdam
PB  - University press         
N1  - Bibliography :P.143-146
ER  -