(3eONd Gdi gjGcd GdeYWjGJ (B: (3NhGQRejGJ hJWHjbGJ YedjI HdZI HGScGd (B/ s - (3YHOGdMSf GdMSjfis ([S.N] : (3GdOGQ GdYQHjI ddYdhe , s, 1989)
Keywords: (3GdMGSHGJ GdGdcJQhfjIs; (3HGScGds; (3HQGeL GdMGSHGJ GdGdcJQhfjIs