Sombat Chinawong. 1993. Comparative studies on selective action of simetryn and dimethametryn on rice cultivars and barnyardgrass. , University of Tsukuba;
Sombat Chinawong. (1993) Comparative studies on selective action of simetryn and dimethametryn on rice cultivars and barnyardgrass . University of Tsukuba/Tsukuba.
Sombat Chinawong. Comparative studies on selective action of simetryn and dimethametryn on rice cultivars and barnyardgrass. . Tsukuba:University of Tsukuba, 1993.
Sombat Chinawong. (1993) Comparative studies on selective action of simetryn and dimethametryn on rice cultivars and barnyardgrass . University of Tsukuba/Tsukuba.