TY - BOOK T1 - Nitrogen application technology for tropical rice as determined by field experiments using 15N tracer technique T2 - Technical bulletin (Tropical Agriculture Research Center) ; A1 - Koyama, Takeo, 1909- . A2 - Chammek, Chittana. A2 - Niamsrichand, Natee. LA - English PP - Tokyo PB - Tropical Agriculture Research Center, Ministry of Agriculture and Forestry YR - 1973 UL - http://discoverylib.upm.edu.my/discovery/Record/495831 OP - 79 CN - S667 R5K88 KW - Rice : Fertilizers. KW - Rice : Soils. KW - Nitrogen fertilizers. ER -