Open Access
Research Paper
Views (858)
Index of drought and wet years using the percentage of normal (PNPI) and Nietzsche Semnan
Sahar Ghafari, Rahim Rezaie, Esfandiar Jahantab
J. Biodiv. & Environ. Sci. 4(6), 124-130, June 2014.
Percent of Normal Precipitation Index (PNPI)