โรจนศิริ พ, ทวยเจริญ น, สุริต ศ, กำแหงฤทธิรงค์ ป. THE INCREASE ON THE ILLUMINATION OF THE CLASSROOM WITH LIGHT SHELF : A CASE STUDY OF FACULTY OF HUMANITIES AND SOCIAL SCIENCES PHRANAKHON RAJABHAT UNIVERSITY. PRRJ(Sci&Tech) [internet]. 2018 Aug. 10 [cited 2026 Sep. 10];13(2):46-63. available from: https://li01.tci-thaijo.org/index.php/PRRJ_Scitech/article/view/111054