Jakrapong Buakla. (2007) Plant diversity and soil properties in smallholding rubber-based agroforestry plantations in Phatthalung and Nakhon Si Thammarat provinces /. Kasetsart University,:ม.ป.ท.Jakrapong Buakla. 2007. Plant diversity and soil properties in smallholding rubber-based agroforestry plantations in Phatthalung and Nakhon Si Thammarat provinces /. ม.ป.ท.:Kasetsart University,;Jakrapong Buakla. Plant diversity and soil properties in smallholding rubber-based agroforestry plantations in Phatthalung and Nakhon Si Thammarat provinces /. ม.ป.ท.:Kasetsart University, 2007. Print.