(3GdbUGU ai GdfaS GdTQjYI GdGSdGejI (B((3OQGSI ebGQfI(B) / s - (3YHOGdZaGQ GHQGgje UGdMs ([S.N] : (3ecJHI GdfgVI GdeUQjI , s, 1989)
Keywords: (3GdGSdGes; (3GdGMcGe GdTQYjIs; (3GdbUGUs; (3GdTQjYI GdGSdGejIs; (3Gdabg GdGSdGeis; (3GdJTQjYs