(3YPGH GdfGQ (B/ s - (3NGf, UOjb MSfs; (3GdLejdj, GdSjOs ((3HjQhJ (B:s (3OGQ GdHMGQ,s, 1988)
Keywords: (3CUhd GdOjf GdESdGejs; (3Gdjhe GdBNQs