00323cam a22000977a 4500008004000000082002500040245007000065260005000135300000800185700003200193180718b1970   xxu||||| |||| 00| 0 eng d  aR143068x42 Un3s-1968  aSurvey of professional scientists 1968cby Ministry of Technology  aLondonbHer Majesty's Stationery Officec1970  a41p  aU.K. Ministry of Technology