Noppasase Wansumrith. (1999) Comparison between drop plate and pour plate methods for enumeration of total bacteria in potable water. Mahidol University,:ม.ป.ท.Noppasase Wansumrith. 1999. Comparison between drop plate and pour plate methods for enumeration of total bacteria in potable water. ม.ป.ท.:Mahidol University,;Noppasase Wansumrith. Comparison between drop plate and pour plate methods for enumeration of total bacteria in potable water. ม.ป.ท.:Mahidol University, 1999. Print.