(3GdOdjd GdWHj ddYGFdI GdSYjOI (B/ s - (3QaYJ, eMeOs ((3HjQhJ (B:s (3efThQGJ GdecJHI GdYUQjI,s, 1983)
Keywords: (3GdUMI GdYGeIs; (3UMI GdCSQIs; (3GdWH GdhbGFjs