Sopon Purawatt. 2003. Continuous-flow extraction for determination of available metals in soils. Field of Study Applied Analytical and Inorganic Chemistry, Mahidol University;
Sopon Purawatt. (2003) Continuous-flow extraction for determination of available metals in soils . Mahidol University/Bangkok.
Sopon Purawatt. Continuous-flow extraction for determination of available metals in soils. . Bangkok:Mahidol University, 2003.
Sopon Purawatt. (2003) Continuous-flow extraction for determination of available metals in soils . Mahidol University/Bangkok.