Ampan Prombutr. 1991. Participation in agricultural training program of Rajamangala Institute of Technology, Surin, Thailand and its contribution to rural trainees and the community. Field of Study Rural Development, Central Luzon State University;
Ampan Prombutr. (1991) Participation in agricultural training program of Rajamangala Institute of Technology, Surin, Thailand and its contribution to rural trainees and the community . Central Luzon State University/Nueva Ecija.
Ampan Prombutr. Participation in agricultural training program of Rajamangala Institute of Technology, Surin, Thailand and its contribution to rural trainees and the community. . Nueva Ecija:Central Luzon State University, 1991.
Ampan Prombutr. (1991) Participation in agricultural training program of Rajamangala Institute of Technology, Surin, Thailand and its contribution to rural trainees and the community . Central Luzon State University/Nueva Ecija.