(3COH GdOfjG hGdOjf (B/s - (3GdeGhQOj, Ydj Hf eMeO Hf MHjH,s 364-450 (3gLQjG(B.s; (3eMeO, EHQGgjes ((3WfWG, eUQ (B:s (3OGQ GdUMGHI ddJQGK,s, 1990)
Keywords: (3GdCNdGb GdESdGejIs; (3GdBOGH GdESdGejIs