TY  - BOOK
AU  - Dror,Yehezkel
TI  - Ventures in policy sciences: concepts and applications 
SN  - 0444001069 :
U1  - 300.72 
PY  - 1971///
CY  - New York
PB  - American Elsevier Pub.
KW  - Policy sciences
N1  - Includes index
ER  -