(3Yde GdHUeGJ (B: s (3OQGSI JWHjbjI TGedI (B/ s - (3TeU, fXjQs; (3NVQ, ahRjs ((3HjQhJ (B:s (3ecJHI GdMjGI,s, 1982)
Keywords: (3HUeGJ GdCUGHYs; (3GdJMbjb GdLfGFjs; (3GdOdjd GdLfGFjs