00400cam a22000977a 4500008004000000082001800040245011100058260005000169300001000219700007300229180718b1970   xxu||||| |||| 00| 0 eng d  aX1068x42 Un3s  aSurvey of professional engineerscby Ministry of Technology and the Council of Engineering, United Nations  aLondonbHer Majesty's Stationery Officec1970  a59+p.  aUnited Nations.Ministry of Technology and the Council of Engineering