TY  - BOOK
AU  - Churchman,C.West
TI  - The systems approach
T2  - A Delta book
SN  - 0440584590 :
AV  - QA402.5 .C49 1979
U1  - 003 
PY  - 1979///
CY  - New York, N.Y.
PB  - Dell Pub. Co.
KW  - System analysis
N1  - Includes bibliographical references
ER  -