TY - BOOK AU - Checkland,Peter TI - Soft systems methodology: a 30-year retrospective SN - 0471986062 (pbk. : alk. paper) U1 - 003 CHE PY - 1999/// CY - Chichester, New York PB - John Wiley KW - System theory N1 - Includes bibliographical references and indexes UR - http://www.loc.gov/catdir/description/wiley033/99037608.html UR - http://www.loc.gov/catdir/toc/onix04/99037608.html ER -