This 7-volume set, first published between 1981 and 1990, forms part of the original Contemporary Social Research series. The structure of the social sciences combines two separate elements, theory and empirical evidence. Both are necessary for successful social understanding; one without the other is barren. This series is concerned with the means by which this structure is maintained and kept standing solid and upright, a job performed by the methodology of social research. Many of the remaining titles are still available separately.