(3GdJhSY GdPQGYi GdGabi (B/ s - (3QFGSI GdLeghQjIs; (3GdeLGdS GdbhejI GdeJNUUIs ([S.N] : (3GdeLGdS GdbhejI GdeJNUUI , s, 1980)
Keywords: (3GdGbJUGOs; (3GdRQGYIs; (3GdgjFGJ GdJTQjYjIs