DjuniwatiS.; HartonoA.; IndriyatiL. T. The Effect of Organic Matter (Pueraria javanica) and Rock Phosphate on the Growth and P-uptake of Corn Plant (Zea mays) in Andisol Pasir Saronggae. Jurnal Ilmu Tanah dan Lingkungan, v. 5, n. 1, p. 17-22, 1 Apr. 2003.