(3JTQjYGJ GdJehjf hGdJSYjQ GdLHQj (B/ s - (3aQL YdhGfj gdjd(B.s ((3GdEScfOQjI, eUQ (B: s (3OGQ GdeWHhYGJ GdLGeYjI,s, 1980)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3bGfhf GdYbhHGJ GdEbJUGOj(B.s