Search Results       Your search for [subject]Phosphate rock -- Philippines -- Negros Provinces returned 1 record.           Chemical characterization and agronomic evaluation of some phosphate deposits from the Negros provinces. by Escarilla, Ma. Lourdes T.; 1980. Subject: Phosphates -- Philippines -- Negros Provinces; Phosphate rock -- Philippines -- Negros Provinces; Phosphatic fertilizers -- Philippines -- Negros Provinces.          Add to Book Cart Relevance: 36.02%