Handayani, sri, and Karnilawati Karnilawati. “KARAKTERISASI DAN KLASIFIKASI TANAH ULTISOL DI KECAMATAN INDRAJAYA KABUPATEN PIDIE”. Jurnal Ilmiah Pertanian, vol. 14, no. 2, Mar. 2018, pp. 52-59, https://doi.org/10.31849/jip.v14i2.437.