(3bGfhf MehQGHj (B: s (3GdUa GdGhd bGfhf (B/ s - (3GdMeOGfj, TYjH GMeO, s ((3HZOGO (B[(3GdYQGb(B] : s (3hRGQI GdJYdje GdYGdj hGdHMK GdYdej (B988.s, 1988)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B151-153.s
(3ehLg dWdHI GdUa GdGhd cdjI GdbGfhf(B.s
Keywords: (3GdbGfhfs -- (3GdYQGbs -- (3HGHd(B.s; (3TQjYI MehQGHj(B.s; (3GdYQGbs -- (3bhGfjf hJTQjYGJ(B.s