3 "id": "ChecklandSystemsThinkingSystemsPractice",
4 "title": "Systems Thinking, Systems Practice",
6 "ISBN": "9780471279112",
7 "URL": "http://www.archive.org/details/systemsthinkings00chec",
10 "family": "Checkland",
14 "issued": { "date-parts": [ [ 1981 ] ] },