00540nam a2200193Ia 4500 CTU_92851 210402s9999 xx 000 0 und d 331.7 M277 Mangahas, Mahar Labour absorption in Philippine agriculture Mahar Mangahas Paris Development Centre Of the Organization 1972 Agricultural laborers Philippines Tuyến Trung tâm Học liệu Trường Đại học Cần Thơ