Study on the use of sludge farming of catfish as organic fertilizer and evaluate its effectiveness in agriculture - Nguyen, Huyen; Hai, Le; Tra, Tung; Viet Thang, Nguyen; Thi Hieu, Tran; Nguyen, Thu; Thi Thu Huyen, Dong; Thi Phuong Thao, Nguyen (VNUHCM Journal of Earth Science and Environment, 2020)