(3GdePcQ hGdJPcjQ hGdPcQ (B/s - (3GHf CHj YGUe, CMeO Hf YeQh Hf CHj YGUe,s 206-287 (3gLQjG(B,.s; (3GdQOGOj, NGdO Hf bGSes ((3GdQjGV (B:s (3OGQ GdefGQ,s, 1993)
Keywords: (3GdhYX hGdEQTGOs