(3GdeQUaGhj aj bGfhf GdELQGAGJ GdLfGFjI(B: s (3eY JWhQGJg GdJTQjYjI hePcQGJg GdEjVGMjI hGdCMcGe aj eGFI YGe (B/s - (3MSf UGOb GdeQUaGhj(B.s ((3GdGScfOQjI (B:s (3efTGI GdeYGQa ,s, 1989)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3bGfhf GdELQGAGJ GdLfGFjIs -- (3CMcGes; (3GdbGfhf GdLfGFjs