Sawanya Sealeum. 2003. Utilization of wastewater from biogas ponds in pig farms as nutrients for wastewater algae. Field of Study Environmental Planning for Community, Mahidol University;
Sawanya Sealeum. (2003) Utilization of wastewater from biogas ponds in pig farms as nutrients for wastewater algae . Mahidol University/Bangkok.
Sawanya Sealeum. Utilization of wastewater from biogas ponds in pig farms as nutrients for wastewater algae. . Bangkok:Mahidol University, 2003.
Sawanya Sealeum. (2003) Utilization of wastewater from biogas ponds in pig farms as nutrients for wastewater algae . Mahidol University/Bangkok.