TY  - BOOK
AU  - Laszlo,Ervin
ED  - Systems Philosophy Symposium.
TI  - The world system: models, norms, applications 
SN  - 0807606952
U1  - 003 
PY  - 1973///
CY  - New York
PB  - G. Braziller
KW  - System theory
KW  - Congresses
KW  - Social systems
KW  - Social values
ER  -