Pissopa Kitjaharn. 1991. Utilization of blue green for the removal of some heavy metals from waste water. Bangkok:Chulalongkorn University;
Pissopa Kitjaharn. (1991) Utilization of blue green for the removal of some heavy metals from waste water (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.
Pissopa Kitjaharn. Utilization of blue green for the removal of some heavy metals from waste water. Bangkok:Chulalongkorn University, 1991.
Pissopa Kitjaharn. (1991) Utilization of blue green for the removal of some heavy metals from waste water (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.