(3efgL GdLZQGajG GdGbJUGOjI aj bUI CUMGH GdSHJ (B/s - (3GdMdjSj, fhGa UGdM YHO GdYRjR,s 1357 (3gLQjG(B-s ((3GdQjGV (B:s (3fhGa UGdM GdMdjSj,s, 1993)
(3HHdjhLQGajI (B: (3U(B. 339-344.s
Keywords: (3GdbQBfs -- (3bUUs; (3GdGbJUGOs -- (3JGQjNs