Erakusten 1 - 3 emaitzak -- 3 bilaketa honetara '', Bilaketaren denbora: 0,39s Findu emaitzak
  1. 1
    nork Mosher, Arthur Theodore 1910-
    Argitaratua 1978
    Liburua

    An introduction to agricultural extension
  2. 2
    nork Rieck, Robert E.
    Argitaratua 1964
    Liburua

    An inventory and analysis of farm management extension short courses, schools and workshops for farm people in the United States and Puerto Rico, 1963-64.
  3. 3
    Liburua

    Report. [1st]- 19.
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