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  1. 1

    Optimum size in objective yield estimation [microform] 由 Flores, Quintin G.

    出版 1974
    Visual Material

    Optimum size in objective yield estimation [microform]
  2. 2

    Rice fertilization a six-year isotope study on nitrogen and phosphorus fertilizer utilization 由 International Atomic Energy Agency

    出版 1970
    图书

    Rice fertilization a six-year isotope study on nitrogen and phosphorus fertilizer utilization
  3. 3

    The Masagana/Margate system of planting rice: a study of an agricultural innovation 由 Covar, Prospero R

    出版 1960
    图书

    The Masagana/Margate system of planting rice: a study of an agricultural innovation

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