(3CYRGFj GdCWaGd JYGdhG eYj Edi GdecJHI (B/ s - (3YdjGf, QHMj eUWais ((3YeGf (B:s (3GdLeYjI GdYdejI GdedcjI (B- (3bSe GdKbGaI GdYdejI,s, 1990)
Keywords: (3ecJHGJ GdCWaGds