©2013 National Research Council of Thailand
Pongpan Leelahakriengkrai. 2011. Diversity of benthic diatoms in main rivers of Thailand and preparation of water quaility index. Field of Study Environmental Science, Chiang Mai University;
Pongpan Leelahakriengkrai. (2011) Diversity of benthic diatoms in main rivers of Thailand and preparation of water quaility index . Chiang Mai University/Chiang Mai.
Pongpan Leelahakriengkrai. Diversity of benthic diatoms in main rivers of Thailand and preparation of water quaility index. . Chiang Mai:Chiang Mai University, 2011.
Pongpan Leelahakriengkrai. (2011) Diversity of benthic diatoms in main rivers of Thailand and preparation of water quaility index . Chiang Mai University/Chiang Mai.