(3ef cfhR GdWH GdTYHj (B:s (3GdCWYeI GdTGejI, hGdfHGJGJ GdeOGhjI (B/s - (3GdMSjfj ,Cjef s ((3GdbGgQI (B:s (3ecJHI GHf SjfG,s, 1992)
Keywords: (3GdWH GdTYHjs; (3GdfHGJGJ GdWHjIs; (3GdYdGL GdfHGJjs