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  1. 1

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

    Publicat 1989
    Llibre

    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 per Watanabe, Iwao, Lee,K.K, Alimagno,B.V, Sato,M, Del Rosario,D.C, De Guzman,M.R

    Publicat 1977
    Analytics

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

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