Utama A, Hadi MP, Nurjani E. Geographic Information Systems Application to Drought Distribution Identification with Standardized Precipitation Index (SPI) Method in Trenggalek Regency. intensif [Internet]. 2021Aug.8 [cited 2024Apr.26];5(2):266-78. Available from: https://ojs.unpkediri.ac.id/index.php/intensif/article/view/15645