Supasorn Songsomboon. (1991) Determination of molecular mutations in dihydrofolate reductase related to pyrimethamine-resistance in falciparum malaria. Mahidol University,:ม.ป.ท.Supasorn Songsomboon. 1991. Determination of molecular mutations in dihydrofolate reductase related to pyrimethamine-resistance in falciparum malaria. ม.ป.ท.:Mahidol University,;Supasorn Songsomboon. Determination of molecular mutations in dihydrofolate reductase related to pyrimethamine-resistance in falciparum malaria. ม.ป.ท.:Mahidol University, 1991. Print.