Showing 1 - 3 results of 3 for search 'Ruthenberg, Hans', Forespørselstid: 0.01s Refine Results
  1. 1

    Innovation policy for small farmers in the tropics the economics of technical innovations for agricultural development af Ruthenberg, Hans

    Udgivet 1985
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    Innovation policy for small farmers in the tropics the economics of technical innovations for agricultural development
  2. 2

    Farming systems in the tropics af Ruthenberg, Hans

    Udgivet 1976
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    Farming systems in the tropics
  3. 3

    Agricultural development in Tanganyika af Ruthenberg, Hans

    Udgivet 1964
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    Agricultural development in Tanganyika

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