F4_GEO_09_02 Tindakan Air Sungai Melalui Hakisan, Pengangkutan Dan Pemendapan (Bhg 1) This content is for members with subscription.Log In Register
F4_GEO_09_03 Tindakan Air Sungai Melalui Hakisan, Pengangkutan Dan Pemendapan (Bhg 2) This content is for members with subscription.Log In Register
F4_GEO_09_04 Bentuk Muka Bumi Akibat Tindakan Air Sungai Di Peringkat Hulu, Tengah Dan Hilir This content is for members with subscription.Log In Register
F4_GEO_09_05 Punca Kemerosotan Kualiti Air Sungai This content is for members with subscription.Log In Register
F4_GEO_09_06 Usaha-usaha Yang Boleh Dilaksanakan Untuk Melestarikan Sungai This content is for members with subscription.Log In Register