Mana Seingsanan. 1993. Dynamics of a model for the activated sludge process. Faculty of Graduate Studies, Mahidol University;
Mana Seingsanan. (1993) Dynamics of a model for the activated sludge process . Mahidol University/Bangkok.
Mana Seingsanan. Dynamics of a model for the activated sludge process. . Bangkok:Mahidol University, 1993.
Mana Seingsanan. (1993) Dynamics of a model for the activated sludge process . Mahidol University/Bangkok.