Nujanart Kungpisdan และ Rasamee Suravanit; Wanpen Prukwiwat; Sumet Prukwarun; Anusorn Ramlee. (2006) Development of Technology in Fertilizer Utilization to Increase Yield of Rubber. <i>Thai Agricultural Research Journal</i>, <i>24</i>(2), 112-131.Nujanart Kungpisdan และ Rasamee Suravanit; Wanpen Prukwiwat; Sumet Prukwarun; Anusorn Ramlee. "Development of Technology in Fertilizer Utilization to Increase Yield of Rubber". Thai Agricultural Research Journal 24 (2006):112-131.Nujanart Kungpisdan และ Rasamee Suravanit; Wanpen Prukwiwat; Sumet Prukwarun; Anusorn Ramlee. Development of Technology in Fertilizer Utilization to Increase Yield of Rubber. Department of Agriculture:ม.ป.ท. 2006.