Rianti Fela, Manullang, M., Siregar, R. T., & Damanik, S. E. (2019). Pengaruh Program Water Resources And Irrigation Sector Management Project (WISMP) Terhadap Produktivitas Padi Sawah Di Kecamatan Siantar Kabupaten Simalungun. Jurnal Regional Planning, 1(2), 67-74. https://doi.org/10.36985/43aevk56