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Journal Article Theory and Method in Comparative Research: Two Strategies Get access Charles Ragin, Charles Ragin Northwestern University Search for other works by this author on: Oxford Academic Google Scholar David Zaret David Zaret Indiana University Search for other works by this author on: Oxford Academic Google Scholar Social Forces, Volume 61, Issue 3, March 1983, Pages 731–754, https://doi.org/10.1093/sf/61.3.731 Published: 01 March 1983
Ragin et al. (Tue,) studied this question.