Suwit Ratanakij. 1989. Available soil moisture simulation model for some upland crops. Faculty of Graduate Studies, Mahidol University;
Suwit Ratanakij. (1989) Available soil moisture simulation model for some upland crops . Mahidol University/Bangkok.
Suwit Ratanakij. Available soil moisture simulation model for some upland crops. . Bangkok:Mahidol University, 1989.
Suwit Ratanakij. (1989) Available soil moisture simulation model for some upland crops . Mahidol University/Bangkok.