Gorard (social sciences, University of Wales) emphasizes the importance of selecting appropriate techniques and understanding their potential and their limitations, stressing that quantitative and qualitative approaches in social science research should be seen as complementary. He describes sources and uses of existing numeric data, then deals with sampling, questionnaire design, experimental approaches, and complex issues such as multivariate analysis and combining data from different sources. Annotation ©2004 Book News, Inc., Portland, OR (booknews.com)