(3EjOjhdhLjI GdSdWI (B: s (3HMK aj GdcJGH GdeOQSj (B/ s - (3SdjeGf, fHjds ((3GddGPbjI (B:s (3OGQ GdMhGQ ddfTQ h GdJhRjY,s, 1988)
Keywords: (3GdefGgLs; (3GdJYdje GdEHJOGFjs; (3GdJYdje GdKGfhjs