TY  - BOOK
AU  - 
AU  - Von Bertalanffy, Ludwig, Ed.
TI  - General systems (vol.4)
U1  - 006 
PY  - 1959///
CY  - Ann Arbor, Michigan
PB  - Society For General Systems Research
KW  - Cybernetics -- Yearbooks
KW  - Social Sciences -- Mathematical Models -- Yearbooks
N1  - Yearbook Of The Society For General Systems Research
ER  -