Ekachan Phantra. 2006. Factors associated with contamination of protozoa and other parasites in public swimming pools. Field of Study Infectious Diseases and Epidemiology, Mahidol University;
Ekachan Phantra. (2006) Factors associated with contamination of protozoa and other parasites in public swimming pools . Mahidol University/Bangkok.
Ekachan Phantra. Factors associated with contamination of protozoa and other parasites in public swimming pools. . Bangkok:Mahidol University, 2006.
Ekachan Phantra. (2006) Factors associated with contamination of protozoa and other parasites in public swimming pools . Mahidol University/Bangkok.