Laksanawadee Panpruik และ Prasarn Pomsoungworg; Boonlerd Boonyonk; Pairoj Panpruik. (1994) Response of Short Duration Castorbean to N, P and K Fertilizer. <i>Thai Agricultural Research Journal</i>, <i>12</i>(1), 42-50.Laksanawadee Panpruik และ Prasarn Pomsoungworg; Boonlerd Boonyonk; Pairoj Panpruik. "Response of Short Duration Castorbean to N, P and K Fertilizer". Thai Agricultural Research Journal 12 (1994):42-50.Laksanawadee Panpruik และ Prasarn Pomsoungworg; Boonlerd Boonyonk; Pairoj Panpruik. Response of Short Duration Castorbean to N, P and K Fertilizer. Department of Agriculture:ม.ป.ท. 1994.