Congress and its members / Roger H. Davidson, Walter J. Oleszek. - Washington : Congr. Quart. Press, [1981]. - 470 p. : ill. ; 23 cm.см.. - (Politics a. public policy ser. / adv. ed. Robert L. Peabody). - Bibliogr. after chap.. - ISBN 0-87187-202-1[MFN: 28316]