(3ehba GHf JjejI ef adSaI GHf QTO ai GdYbjOI hYde GdcdGe hGdadSaI (B/s - (3GdWHdGhi eMehO SYOs ((3GdbGgQI (B: s (3GdeDda ,s, 1989)
Keywords: (3GHf QTO, GHhGdhdjO eMeO Hf GMeOs; (3GdadSaI GdGSdGejIs; (3Yde GdcdGes