(3GMOGK GaQjbjI (B/ s - (3Hjf, HjjQs ((3djHjG (B: s (3GdOGQ GdLeGgjQjI ddfTQ hGdJhRjY hGdGYdGf , s, 1991)
Keywords: (3GdSjGSIs; (3GaQjbjG (B- (3JGQjNs; (3GaQjbjG (B- (3GdGMhGd GdSjGSjIs; (3GdOhdI GdfGejI (B- (3GdSjGSI GdGbJUGOjIs