6n Purposeful systems. An inteerdiciplinary analysis of individual and social behavior as a system of purposeful events. /
Ackoff, Russell L.
6n Purposeful systems. An inteerdiciplinary analysis of individual and social behavior as a system of purposeful events. / - 1972.
6n Purposeful systems. An inteerdiciplinary analysis of individual and social behavior as a system of purposeful events. / - 1972.