Khamidah, N. and Saputra, R. (2020) “Soil Acidity Soil Acidity Mapping of A Swampland Planted with Rice in Ampukung Village, Kelua District, Tabalong Regency”, TROPICAL WETLAND JOURNAL, 6(2), pp. 50 - 55. doi: 10.20527/twj.v6i2.87.