00620nam a2200181Ia 4500 190328s9999||||xx |||||||||||||| ||und|| 70-107586 471-46750-2 NITIL NITIL 21st 658.502 K29C Kelleher, Grace J (Ed.) The Challenge to systems analysis public policy and social change Grace J Kelleher New York John Wiley 1970 viii, 150p. Publications in operations research/ed. by David B. Hertz System analysis; Operations research; Urbanization; Land deg radations BKS 27500 27500 0 0 DDC 0 0 NITIL NITIL 2019-04-03 0 658.502 K29C 73978 2019-04-03 00:00:00 2019-04-03 BKS