TY  - BOOK
AU  - Checkland,Peter
TI  - Soft systems methodology: a 30-year retrospective 
SN  - 0471986062 (pbk. : alk. paper)
AV  - Q295 .C45 1999
U1  - 003 21
PY  - 1999///
CY  - Chichester, New York
PB  - John Wiley
KW  - System theory
N1  - Includes bibliographical references and indexes
UR  - http://www.loc.gov/catdir/toc/onix04/99037608.html
ER  -