Unobtrusive measures [electronic resource] / Eugene J. Webb ... [et al.].
Series: Sage classics ; 2.Publication details: Thousand Oaks, Calif. ; London : SAGE, c1999.Edition: Rev. edDescription: 1 online resource (xix, 220 p.)ISBN:- 9781452243443 (ebook) :
- 300.72 23
- H62 .N675 1999

Previous ed.: published as Nonreactive measures in the social sciences. 2nd ed. 1981.
This completely rewritten and updated edition builds on the earlier version's drive to justify novel techniques of survey and archival research. The authors combine methods so that research results can withstand the threats to validity.
Specialized.
Description based on print version record.
Includes bibliographical references and index.