Dangos 1 - 3 canlyniadau o 3, amser ymholiad: 0.01e Mireinio'r Canlyniadau
  1. 1

    On the theory and measurement of technological change gan Brown, Murray

    Cyhoeddwyd 1968
    Llyfr

    On the theory and measurement of technological change
  2. 2

    On the theory and measurement of technological change. gan Brown, Murray 1929-

    Cyhoeddwyd 1967
    Llyfr

    On the theory and measurement of technological change.
  3. 3

    On the theory and measurement of technological change gan Brown, Murray 1929-

    Cyhoeddwyd 1966
    Llyfr

    On the theory and measurement of technological change

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