· Ng Meng Wai, Alejandro Camerlengo, Ahmad Khairi Abdul Wahab and Sobri Harun where P = rainfall,...
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· Ng Meng Wai, Alejandro Camerlengo, Ahmad Khairi Abdul Wahab and Sobri Harun where P = rainfall, Q = surface runoff, G = groundwater discharge, AS = change in storage, At = change