(3GdYgO GdLOjO(B: (3GfLjd dhbG (B/ s - (3fcdS fSjes; (3LhRja UGHQs; (3ehQjS(B, (3djhfs ([S.N] : (3OGQ GdKbGaI GdYQHjI , s, 1991)
Keywords: (3GdYgO GdLOjOs; (3GdGfLjds; (3GfLjd dhbGs