©2013 National Research Council of Thailand
Ekachai Phumduang. 2008. Environmental education based indigenous knowledge management for community learning. Faculty of Social Sciences and Humanities, Mahidol University;
Ekachai Phumduang. (2008) Environmental education based indigenous knowledge management for community learning . Mahidol University/Bangkok.
Ekachai Phumduang. Environmental education based indigenous knowledge management for community learning. . Bangkok:Mahidol University, 2008.
Ekachai Phumduang. (2008) Environmental education based indigenous knowledge management for community learning . Mahidol University/Bangkok.