(3GdHMQ GdCMeQ h GdUQGY GdYQHj (B- (3GdESQGFjdj (B: s (3GdJfGaS Hjf ESJQGJjLjJjf (B/ s - (3GdSdWGf, YHO Gddg YHO GdeMSfs ((3HjQhJ (B:s (3eQcR OQGSGJ GdhMOI GdYQHjI,s, 1988)
Keywords: (3JGQjN eUQs; (3GdHMQ GdCMeQs