. . . . . . . "Whatever happened to productivity ?" . . . . . . "Whatever happened to productivity? : tenth Wincott memorial lecture delivered at the Royal Society of Arts on Wednesday, 31 October 1979" . . . . . . "Whatever happened to productivity? = ; tenth Wincott memorial lecture delivered at the Royal Society of Arts on Wednesday, 31 October 1979" . . . . . . . . "Whatever happened to productivity : tenth Wincott memorial lecture delivered at the Royal Society of Arts on Wednesday, 31 October 1979" . . . . . "Whatever happened to productivity?"@en . "Whatever happened to productivity?" . . . . "Whatever happened to productivity" . . . . "Whatever happened to productivity? : tenth Wincott memorial lecture" . . "Whatever happened to productivity? : Tenth Wincott Memorial Lecture delivered at the Royal Society of Arts on Wednesday, 31 October 1979" . . . . . "Whatever happened to productivity : tenth wincott memorial lecture delivered at the royal society of arts" . . . . . "Whatever happened to productivity? : tenth Wincott Memorial Lecture delivered at the Royal Society of Arts on Wednesday, 31 October 1979" . . "Wincott Memorial Lecture, London, 1979. 10th," . . . "Economic history" . . "Indústria Productivitat Gran Bretanya." . . "Ergonomics and human-machine relations." . . . . "Royal Society of Arts (1979)" . . . "Industrial productivity Great Britain." . . "économie internationale productivité." . . "Gran Bretanya" . . "Industrial productivity." . . "Industrial productivity" . "Institute of Economic Affairs" . . . "Great Britain." . . "Great Britain" . "Economische productie." . . "Institute of Economic Affairs for the Wincott Foundation." . . "Productivité Grande-Bretagne." . . "1964 - 1979" . . "Grande-Bretagne" . . "Institute of Economic Affairs." . . "Wincott Foundation." . . "Groot-Brittannië." . .