(3CMOGK hCYdGe (B( (3GdeLdO GdKGdK (B)s - (3TjNGfj(B. (3SejQs ((3eDSSI YR GdOjfs (3HjQhJs, 1989)
(3KdGKI CLRGA ef faS GdcJGH eL(B1 - (3GdLRA GdGhd (B383(3U(B. (3GdLRA GdKGfj (B398(3U(B. (3GdLRA GdKGdK (B398(3U(B.s
Keywords: (3GdehGO GdhKGFbjIs; (3GdehGO GdENHGQjIs