©2013 National Research Council of Thailand
Sawaeng Jongsutjarittam. 1996. Knowledge and opinions of the youths on natural resources and environment : a case study of Romklao Srakeo Rajamangalapisek School, Amphoe Wattana Nakhon, Changwat Srakeo. Graduate School, Kasetsart University;
Sawaeng Jongsutjarittam. (1996) Knowledge and opinions of the youths on natural resources and environment : a case study of Romklao Srakeo Rajamangalapisek School, Amphoe Wattana Nakhon, Changwat Srakeo . Kasetsart University/Bangkok.
Sawaeng Jongsutjarittam. Knowledge and opinions of the youths on natural resources and environment : a case study of Romklao Srakeo Rajamangalapisek School, Amphoe Wattana Nakhon, Changwat Srakeo. . Bangkok:Kasetsart University, 1996.
Sawaeng Jongsutjarittam. (1996) Knowledge and opinions of the youths on natural resources and environment : a case study of Romklao Srakeo Rajamangalapisek School, Amphoe Wattana Nakhon, Changwat Srakeo . Kasetsart University/Bangkok.