TY - BOOK AU - Bertalanffy, Ludwig von TI - General systm theory: foundations, development, applications AV - Q 295 B47 PY - 1969///, c1968 CY - New York PB - G. Braziller KW - TeorĂ­a de sistemas N1 - BibliografĂ­a: p. [254]-277 ER -