(3OQhS aj GdbGfhf GdRQGYj (B/s - (3aQL, Jhajb MSfs ((3GdEScfOQjI, eUQ (B:s (3eDSSI GdKbGaI GdLGeYjI,s, 1986)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdRQGYIs -- (3bhGfjf hJTQjYGJs -- (3eUQs