Phosphorus in action biological processes in soil phosphorus cycling

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Environmental fate of macro-elements in upland soils under different land uses in Rizal by Urriza, Gavino Isagani P.

Mineralization of organic phosphorus in a subtropical freshwater wetland by Oña, Teresita Chua

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Ecological study of the Bontoc rice paddy system a case of human-environment interaction by Omengan, Elizabeth A., Sajise, Percy E.

Basic flow of phosphorus brackishwater fishponds by Baldevarona, Rodolfo B. 1944-

Sources and rates od fertilizer phosphorus for flooded rice in Buenavista clay [microform] by Duangputra, Piya 1939-

The phosphate supply pattern of some Philippine soils with high and low phosphorus contents [microform]. by Malik, Muhammad Bashir 1935-

Availability of inorganic phosphorus fractions and organic phosphorus accumulation in rice soils [microform]. by Singlachar, Mandayam Ammanji 1940-

Evaluation and correlation on selected phosphorous soil test methods for paddy soils [microform] by Samonte, Henry Peralta 1939-

Evaluation of some phosphorous tests for lowland rice soils [microform] by Layese, Milegua Fernandez 1944-