TY  - BOOK
AU  - Cavallo Roger Ed.
TI  - System methodology in social science research :  Re   
T2  - Frontiers in systems research : Implications for the social sciences, 2
U1  - Sigma b4, M2 
PY  - 1982///
CY  - Boston
PB  - Kluwer Nijhoff         
KW  - Social Science
ER  -