Yupa Khunnarong. 2000. Reduction of chemical fertilizer application in integrated farming : a case study of rice fish culture in Bangplama district Suphanburi province. Program of Appropriate Technology for Resource Development, Mahidol University;
Yupa Khunnarong. (2000) Reduction of chemical fertilizer application in integrated farming : a case study of rice fish culture in Bangplama district Suphanburi province . Mahidol University/Bangkok.
Yupa Khunnarong. Reduction of chemical fertilizer application in integrated farming : a case study of rice fish culture in Bangplama district Suphanburi province. . Bangkok:Mahidol University, 2000.
Yupa Khunnarong. (2000) Reduction of chemical fertilizer application in integrated farming : a case study of rice fish culture in Bangplama district Suphanburi province . Mahidol University/Bangkok.