BBǣprīan wichā sangkhomsơksāBǣprīan wichā sangkhomsơksāde Samān Sǣngmali, Bēnčhā Sǣngmali, William J. GedneyMateriasSocial sciencesTextbooksStudy and teaching (Elementary)Ediciones (1)Bǣprīan wichā sangkhomsơksā (1970)Thai Watthanā Phānit · tha