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Helmut Norpoth
University of Michigan Press c1992
Available at 12 libraries
edited by Helmut Norpoth, Michael S. Lewis-Beck, and Jean-Dominique Lafay
University of Michigan Press c1991
Available at 25 libraries
Gudmund R. Iversen, Helmut Norpoth
Sage Publications c1987 2nd ed Sage university papers series . Quantitative applications in the social sciences ; no. 07-001
Available at 50 libraries
