(3GdMeGjI GdOhdjI ddGbdjGJ aj GdbGfhf GdOhdj GdYGe GdeYGUQ (B/ s - (3GdWGgQ, eMeO, s ((3GdbGgQI (B[(3eUQ(B] : s (3OGQ GdfgVI GdYQHjI, s, 1990)
(3GdcJGH jVe edGMb(B.s
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B271-288.s
Keywords: (3GdGbdjGJ(B.s; (3GdbGfhf GdOhdj GdYGe(B.s; (3Mbhb GdGfSGf(B.s