©2013 National Research Council of Thailand
edited by Sorasith Vacharotayan..[et.al]. 1985. Proceedings of the international seminar on environmental factors in agricultural production 15-19 December 1984, Hatyai, Songkhla, Thailand. Bangkok:Kasetsart University;
edited by Sorasith Vacharotayan..[et.al]. (1985) Proceedings of the international seminar on environmental factors in agricultural production 15-19 December 1984, Hatyai, Songkhla, Thailand (รายงานผลงานวิจัย). Kasetsart University:Bangkok.
edited by Sorasith Vacharotayan..[et.al]. Proceedings of the international seminar on environmental factors in agricultural production 15-19 December 1984, Hatyai, Songkhla, Thailand. Bangkok:Kasetsart University, 1985.
edited by Sorasith Vacharotayan..[et.al]. (1985) Proceedings of the international seminar on environmental factors in agricultural production 15-19 December 1984, Hatyai, Songkhla, Thailand (รายงานผลงานวิจัย). Kasetsart University:Bangkok.