00625nam a2200205Ia 4500 CTU_97622 210402s9999 xx 000 0 und d 331.88 E92 Evans, Trevor The challenge of change Report of a conference on technological change and human development at Jerusalem, 1969 Trevor Evans New York Pergamon Press 1970 Labor unions,Technology and civilization Congresses,Congresses M.Loan Trung tâm Học liệu Trường Đại học Cần Thơ