000			00373cam a22001217a 4500
008			180718b1960 xxu||||| |||| 00| 0 eng d
082			_aT2531 Sa37
100			_aSalter, W.E.G.
245			_aProductivity and technical change _cby W.E.G. Salter
260			_aCambridge _bCambridge University Press _c1960
650			_aLabor productivity.
650			_aTechnological innovations
999			_c431118 _d431118