Kingkan Kheawsaard. 2004. Utilization of two common fern species : Pteris tripartita and Pteris vittata to remediate copper and arsenic contaminated soils. Field of Study Technology of Environmental Management, Mahidol University;
Kingkan Kheawsaard. (2004) Utilization of two common fern species : Pteris tripartita and Pteris vittata to remediate copper and arsenic contaminated soils . Mahidol University/Bangkok.
Kingkan Kheawsaard. Utilization of two common fern species : Pteris tripartita and Pteris vittata to remediate copper and arsenic contaminated soils. . Bangkok:Mahidol University, 2004.
Kingkan Kheawsaard. (2004) Utilization of two common fern species : Pteris tripartita and Pteris vittata to remediate copper and arsenic contaminated soils . Mahidol University/Bangkok.