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  1. 1

    Manual on heat detection, artificial insemination and pregnancy diagnosis for water buffalo. por De Guzman, M. R.

    Publicado 1989
    Libro

    Manual on heat detection, artificial insemination and pregnancy diagnosis for water buffalo.
  2. 2

    Biological nitrogen fixation in paddy field studied by in SITU acetylene-reduction assays por Watanabe, Iwao, Lee,K.K, Alimagno,B.V, Sato,M, Del Rosario,D.C, De Guzman,M.R

    Publicado 1977
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    Biological nitrogen fixation in paddy field studied by in SITU acetylene-reduction assays

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