(3eMGhdGJ JhMjO hJWhjQ GdefGgL GdOQGSjI aj GdHdGO GdYQHjI (B: (3OQGSI ejOGfjI s - (3GdNWjH , GMeO(B, s; (3GdNWjH , GMeOs ((3GdefXeI GdYQHjI ddJQHjI hGdKbGaI hGdYdhe (B- (3GdGdcShs, 1981)
1