TY  - BOOK
AU  - Ackoff,Russell Lincoln
AU  - Emery,F.E.
TI  - On purposeful systems
SN  - 0202370003
AV  - H61 .A38
U1  - 300/.1/82 
PY  - 1972///]
CY  - Chicago
PB  - Aldine-Atherton
KW  - Social systems
KW  - Local
KW  - Social sciences
KW  - Methodology
N1  - Includes bibliographies
ER  -