Kirana BC, Kirani TC, Siregar SIG, Suaif A, Wismanadi H, Sifaq A. EVALUATION AND OPTIMIZATION OF NATURAL LIGHTING ON THE SECOND FLOOR OF THE LAMPUNG HAPKIDO MARTIAL ARTS ROOM AT BTC (BAGOES TRAINING CENTER) GYM SEPUTIH RAMAN : EVALUASI DAN OPTIMALISASI PENCAHAYAAN ALAMI PADA LANTAI DUA RUANG BELADIRI HAPKIDO LAMPUNG DI BTC (BAGOES TRAINING CENTER) GYM SEPUTIH RAMAN. SJIIPS [Internet]. 2025 Dec. 2 [cited 2025 Dec. 7];14(4):3000-14. Available from: https://ejournal.unibabwi.ac.id/index.php/sosioedukasi/article/view/6712