Theerapong Sangpradit. 2009. Enhancing lower secondary school Thai student's understanding of light : social constructivist approach. Faculty of Education, Kasetsart University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2009.462

Theerapong Sangpradit. Enhancing lower secondary school Thai student's understanding of light : social constructivist approach. . Bangkok:Kasetsart University, 2009. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2009.462

Theerapong Sangpradit. (2009) Enhancing lower secondary school Thai student's understanding of light : social constructivist approach . Kasetsart University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2009.462