(3GdaGWejhf hGdUdjHjhf (B:s - (3ebHd ,agej Jhajbs ((3HjQhJ (B:s (3GdOGQ GdLGeYjI,s, 1979)
Keywords: (3GdYGde GdYQHj (B-(3JGQjN(B-(3GdYUQ GdZHGSjs