Showing 1 - 3 results of 3 for search 'Ruthenberg, Hans' Refine Results
  1. 1
    Smallholder farming and smallholder development in Tanzania / edited by Hans Ruthenberg.
    by Ruthenberg, Hans
    Published 1968
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  2. 2
    Farming systems in the tropics / by Hans Ruthenberg.
    by Ruthenberg, Hans
    Published 1980
    Edition: 3rd ed.
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  3. 3
    Innovation policy for small farmers in the tropics : the economics of technical innovations for agricultural development / by Hans Ruthenberg ; edited by Hans E. Jahnke.
    by Ruthenberg, Hans
    Published 1985
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