Ronald N. Giere. Scientific Perspectivism. iv + 151 pp., illus., index. Chicago/London: University of Chicago Press, 2006. $30 (cloth).Stephen H. Kellert;, Helen E. Longino;, C. Kenneth Waters (Editors). Scientific Pluralism. (Minnesota Studies in the Philosophy of Science.) xxix + 248 pp., figs., tables, index. Minneapolis/London: University of Minnesota Press, 2006. $50 (cloth).