Search Results       Your search for [author]Duque, Conrado M., 1946- returned 1 record.           Phosphorus sorption isotherm of Bukidnon soils and its relation to phosphorus requirements of soybean. by Duque, Conrado M., 1946-; Subject: Phosphatic fertilizers; Soils -- Phosphorus content; Soy-bean -- Philippines -- Fertilizers and manures.          Add to Book Cart Relevance: 22.06%