Agricultural Journal 7 ( 5 ): 307 - 315 , 2012
The Social Sciences 7 ( 1 ): 61 - 64 , 2012
Anand Kumparatana, Charlie Navanugraha and Phassakon Nuntapanich
The Social Sciences 7 ( 2 ): 252 - 256 , 2012
Anand Kumparatana, Charlie Navanugraha and Phassakon Nuntapanich
The Social Sciences 7 ( 2 ): 262 - 267 , 2012