Water Quality Assessment of Tributaries of Batang Baleh in Sarawak Using Cluster Analysis - Ling, Teck Yee; Soo, Chen Lin; Lee-Eng, Teresa Heng; Lee, Nyanti; Sim, Siong Fong; Jongkar, Grinang; Lee, Karen Suan Ping; Tonny, Ganyai (Hindawi Publishing, 2018)