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Philippines--South Cotabato (1)
Philippines--Visayan Islands (1)
Philippines--Visayan Islands--History (1)
Philippines--Western Visayas--History (1)
Philippines. Department of Education. Schools Division of Iloilo (1)
Philippines. Ministry of Education and Culture (1)
Phosphatic fertilizers (1)
Physicians (1)
Physicians--Family relationships (1)
Plant inoculation (1)