(3GdGYLGR GdbQGfi (B: (3hLhgg hGSQGQg (B/ s - (3YHOGdZfi eMeO SYO HQcIs ([S.N] : (3ecJHI hgHI , s, 1989)
Keywords: (3GdHdGZI GdYQHjIs; (3GdGYLGR GdYdei ddbQGfs; (3GdbQGfs