(3GdfXe GdeGdjI h GdEbJUGOjI aj GdOhdI GdESdGejI Ydi VhA cJGH GdNQGL dGHj jhSa (B/ s - (3eQYj, eMeO eMeOs ((3GdOhMI (B: s (3OGQ GdKbGaI, s, 1987)
Keywords: (3GdEbJUGO GdESdGej(B. s; (3GdNQGL(B. s; (3GdVQGFH(B.s; (3GdYQGb(B. s