(3GdJbfjGJ GdMOjKI ddcGTha (B/ s - (3YeGO GHhSYOs; (3SHQGi, HjJQs ([S.N] : (3GdOGQ GdYQHjI ddYdhe , s, 1989)
Keywords: (3GdMGSHGJ GdGdcJQhfjIs