Bambang Y. UJI PRESTASI KOLEKTOR SURYA TIPE PIPA DUA LAPIS TERHADAP VARIASI SUDUT KEMIRINGAN. Momentum [Internet]. 2018 Apr. 1 [cited 2025 Dec. 23];14(1). Available from: https://publikasiilmiah.unwahas.ac.id/MOMENTUM/article/view/2187