00549nam a2200181Ia 4500 CTU_99098 210402s9999 xx 000 0 und d 658.5 T114 A tabulation of case studies on technological change : Economic and social problems reviewed in 160 case studies Switzerland Imprimerie Centrale 1965 Technological innovations Case studies Truc Trung tâm Học liệu Trường Đại học Cần Thơ