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Comparison of respondents and nonrespondents in a periodic health examination program to a mailed questionnaire.
Dunn, J P, Hawkes, RVolume:
56
Language:
english
Journal:
American Journal of Public Health and the Nations Health
DOI:
10.2105/ajph.56.2.230
Date:
February, 1966
File:
PDF, 651 KB
english, 1966