(3OQGSI GdLOhi ddeTQhYGJ GdGSJKeGQjI (B/s - (3Mfai Rci YjOs ((3GdbGgQI (B:s (3OGQ GdbGgQI ddfTQ hGdJhRjY,s, 1977)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdeGdjI GdYGeI h GdJTQjY GdVQjHj s