Sri Rahayu Endang Lestari, Gusti Fitriyana, & Davina Athiya Ramadanty. (2025). Analysis Of Added Value And Income Of Robusta Coffee Bean Processing Business Into Coffee Powder In Tanjung Menang Village, Jarai District, Lahat Regency, South Sumatera Province. International Journal Of Humanities Education and Social Sciences, 4(6). https://doi.org/10.55227/ijhess.v4i6.1785