%0 Journal Article
%A Jahangir, Mohammad Hossein, Saranirad, Mohammad
%T Evaluation of drought in South Khorasan province (Iran) using normal precipitation index (PNPI) and standardized method index (Z)
%J Journal of Environmental Science and Technology
%V 21
%N 4
%P 45-59
%D 2019
%R 10.22034/jest.2019.14562
%U https://sanad.iau.ir/fa/Article/839197