00493pamaa2200169 4500 0000003337 20060119090000.0 031420153X 320.973 UND JK271 UND UNDERSTANDING American government Susan Welch...[et al.]. 4th ed. California: West/Wadsworth Pub., 1997. xix, 586p.: col.ill.; 26cm. United States -- Politics and government Welch, Susan Gruhl, John