Politics & structure : essentials of American national government / Thomas G. Ingersoll, Robert E. O'Connor. Politics and structure Ingersoll, Thomas G. O'Connor, Robert E., 1945- O'Connor, Robert E., 1945- Politics and structure. JK274 .I43 1986 320.973 INP Rev. ed. of: Politics and structure / Robert E. O'Connor. 3rd ed. c1983. Includes bibliographies and index. Monterey, CA : Brooks/Cole Pub. Co., c1986. c1986. 1986 Text xii, 200 p. : eng United States Politics and government.