(3OQGSGJ aj Gdadc YfO GdYQH Qbe (B(1)s ((3HZOGO (B[(3GdYQGb(B] : s (3eQcR GMjGA GdJQGK GdYdej GdYQHj, (B987.s, 1987)
(3jJVef GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3Gdadc YfO GdYQH(B.s; (3GdYdhe GdYQHjI(B.s