Dangos 11 - 16 canlyniadau o 16 ar gyfer chwilio '', amser ymholiad: 0.01e Mireinio'r Canlyniadau
  1. 11
    gan Barker, Randolph
    Cyhoeddwyd 1976
    Visual Material

    The probable impact of the seed-fertilizer revolution on grain production and on farm labor requirements [microform]
  2. 12
    gan Barker, Randolph
    Cyhoeddwyd 1974
    Llyfr

    Some economic issues to consider for would-be producers of rice under General Order 47
  3. 13
    gan Barker, Randolph
    Cyhoeddwyd 1972
    Download the full-text here
    Llyfr

    The probable impact of the seed-fertilizer revolution on grain production and on farm labor requirements
  4. 14
    Llyfr

    The probable impact of the seed-fertilizer revolution on grain production and on farm labor requirements
  5. 15
    Cyhoeddwyd 1971
    Llyfr

    Employment and technological change in Philippine agriculture
  6. 16
    gan Barker, Randolph
    Cyhoeddwyd 1970
    Llyfr

    Research relating to the economics of irrigation in rice production
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