(3GdJdhK GdHjFj hSHd ehGLgJg (B/s - (3Shjde, eMeO fHgGfs ((3GdbGgQI (B:s (3GdgjFI GdeUQjI GdYGeI ddcJGH,s, 1998)
(3HHdjhLQGajI (B: (3U(B. 115-122.s
Keywords: (3GdejGgs -- (3JdhK s; (3JdhK GdHjFIs; (3GdJQHIs -- (3JdhKs