Han, K. W. (1977). Sulfur availability to rice plants and its transfoemation in rice soil and rhizosphere [microform]. Photoduplication Service. University of the Philippines Library.
Dyfyniad Arddull ChicagoHan, Kang Wan. Sulfur Availability to Rice Plants and Its Transfoemation in Rice Soil and Rhizosphere [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Dyfyniad MLAHan, Kang Wan. Sulfur Availability to Rice Plants and Its Transfoemation in Rice Soil and Rhizosphere [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.