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Your query returned 3 results. Series results are grouped under the most relevant study. You can ungroup series results.

 
 
 
 
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Study Title/Investigator
2.
Old Age in the United States, 1880 (ICPSR 8427)
Jensen, Richard; Smith, Daniel Scott; Friedberger, Mark W.; et al.
3.
Old Age in the United States, 1900 (ICPSR 8428)
Jensen, Richard; Smith, Daniel Scott; Friedberger, Mark W.; et al.
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