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Time Trends in Leisure-Time Physical Activity in the Upper Midwest 1957-1987: University of Minnesota Studies
David R. Jacobs Jr., Lorraine P. Hahn, Aaron R. Folsom, Peter J. Hannan, J. Michael Sprafka and Gregory L. BurkeVolume:
2
Language:
english
Journal:
Epidemiology
DOI:
10.2307/20065659
Date:
April, 1991
File:
PDF, 1.21 MB
english, 1991