Kuok Kuok K, Chan Chiu P. Space-saving rainwater harvesting tanks for double story houses in Kuching, Sarawak. IJET [Internet]. 2019 Jan. 27 [cited 2025 Aug. 17];8(1):38-43. Available from: https://mail.sciencepubco.com/index.php/IJET/article/view/17437