(3EHf GdfajS ecJTa GdOhQI GdOehjI GdUZQi (B/ s - (3ajGV, SdjeGfs ((3GdbGgQI (B:s (3eQcR GdCgQGe,s, 1990)
Keywords: (3GdYdeGAs; (3fGTGhf UZGQ (B(10-14) (3SfhGJs