Unobtrusive measures; nonreactive research in the social sciences
By: [by] Eugene J. Webb [and others]
Contributors: Webb, Eugene J., 1933-
Series: Rand McNally sociology series
Publisher: Rand McNally
Published: 1966
Place of publication: Chicago
Language: eng
Number of pages: 225
Subjects: Social sciences -- Research
Notes: Bibliography: p. 187-215.
Second ed.: Nonreactive measures in the social sciences. 1981.