(3GdUMGaI (B/s - (3GdHjjQ (B: (3HjjQ(B.s; (3eMehO (B: (3aGWeI YHO Gddg s ((3GdbGgQI (B:s (3GdgjFI GdeUQjI GdYGeI ddcJGH (B:s, 1987)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI (B.s
Keywords: (3GdGYdGe(B.s; (3GdUMGaI(B.s