(3GdSjfeG GdNjGdjI (B/ s - (3fjchddR , HjJQs; (3eOMJ eMahX (B((3eJQLe(B)s ((3GdbGgQI (B: s (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1993)
Keywords: (3GdGNQGL GdSjfeGFis; (3GdJeKjd ai GdSjfeGs; (3GdGadGe GdSjfeGFjI (B- (3JGQjN hfbOs; (3GdNjGd GdYdei (B- (3GadGes; (3GadGe GdQYHs