(3HGjhdhLjG EfJGL GddHf (B/ s - (3TeOJ, L (B. (3g`s; (3GdMcje, eQJVi ceGds; (3GdbS, LdGd EjdjGs; (3GdYHjOj, UHGM YHO GdQVGs ((3HZOGO (B:s (3hRGQI GdJYdje GdYGdj h GdHMK GdYdej,s, 1981)
Keywords: (3GdCZfGes; (3GdCHbGQs; (3GdCdHGfs