[1]
ใจกล้า ส. and กีรติจำเริญ ว., “A STUDY OF LEARNING ACHIEVEMENT ON SAVE ENVIRONMENTS LEARNING UNIT AND PROBLEM SOLVING ABILITY OF GRADE 10 STUDENTS USING THE PROBLEM–BASED LEARNING”, Res Comm Soc Dev J, vol. 13, no. 1, pp. 178–190, Jan. 2019.