Political patterns in America : conflict representation and resolution / Dan Nimmo and Thomas Ungs. Nimmo, Dan D. Ungs, Thomas D. (Thomas Dale), 1928- joint author. 320.973 NIP Includes index. Bibliography: p. 485-499. San Francisco : W. H. Freeman, c1979. c1979. 1979 Text x, 541 p. : eng United States Politics and government Handbooks, manuals, etc.