(3GdGZQGV hGdJTNjU ai WH GdGWaGd (B/ s - (3jGSjf YQGHis; (3HSGe GdHQTIs; (3LgGO NWGHs ([S.N] : (3eWHYI RjOGf KGHJ , s, 1990)
Keywords: (3GdWHs; (3GdGWaGds; (3GdGeQGVs; (3WH GdGSfGfs; (3GdJTNjUs