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,:ม.ป.ท.Yupa Khunnarong. 2000. Reduction of chemical fertilizer application in integrated farming : a case study of rice fish culture in Bangplama district Suphanburi province. ม.ป.ท.:Mahidol University,;Yupa Khunnarong. Reduction of chemical fertilizer application in integrated farming : a case study of rice fish culture in Bangplama district Suphanburi province. ม.ป.ท.:Mahidol University, 2000. Print.