(3CacGQ h BQGA (B/ s - (3BjfTJjf, CdHQJs; (3TMGJg, QeSjSs ((3GdbGgQg (B:s (3GdgjFI GdeUQjI GdYGeI ddcJGH,s, 1986)
Keywords: (3GdfSHjIs; (3GdajRjGAs