TY  - BOOK
A2  - by Ludwig von Bertalanffy.
AU  - Bertalanffy, Ludwig von
ET  - 7th printing.
NV  - XXIV, 295 s. ;
PY  - 2009
SN  - 9780807604533
SN  - 0807604534
TI  - General system theory : foundations, development, applications /
ER  -