Widyastuti R, Tambunan MP, Taqyuddin T, Tambunan RP. Pola Sebaran Kekeringan di Kecamatan Simpenan Menggunakan Metode SPI (Standardized Precipitation Index). jurgeo [nternet]. 2025Jul.23 [cited 2025Dec.6];6(1). vailable from: https://journal.its.ac.id/index.php/geosaintek/article/view/7312