List of Articles سیستمهای پشتیبان تصمیمگری Open Access Article Abstract Page Full-Text 1 - Combination of MCDM and GIS for study of the gypsum mineral mines spatial distribution with emphasis on environmental considerations (Case Study: Hablehrud catchment-Semnan province ( Mohammad Reza Delghandi Mir Masood Kheirkhah Zarkesh