Watana Watananonta และ Saowaree Tangsakul; Methee Kamhung; Chamlong Kogram; Sompong Chompunukulrat; Sukit Ratanasriwong; Suwapan Ratanarat; Preecha Phetprapi; Reinhardt Howeler. (2004) The Response of Micronutrients on Cassava Root Yield of Rayong 72 and Kasetsart 50. <i>Thai Agricultural Research Journal</i>, <i>22</i>(1), 24-38.Watana Watananonta และ Saowaree Tangsakul; Methee Kamhung; Chamlong Kogram; Sompong Chompunukulrat; Sukit Ratanasriwong; Suwapan Ratanarat; Preecha Phetprapi; Reinhardt Howeler. "The Response of Micronutrients on Cassava Root Yield of Rayong 72 and Kasetsart 50". Thai Agricultural Research Journal 22 (2004):24-38.Watana Watananonta และ Saowaree Tangsakul; Methee Kamhung; Chamlong Kogram; Sompong Chompunukulrat; Sukit Ratanasriwong; Suwapan Ratanarat; Preecha Phetprapi; Reinhardt Howeler. The Response of Micronutrients on Cassava Root Yield of Rayong 72 and Kasetsart 50. Department of Agriculture:ม.ป.ท. 2004.