Open AccessTime Trends in Leisure-Time Physical Activity in the Upper Midwest 1957–1987
Author(s) -
David R. Jacobs,
Hahn Lp,
Folsom Ar,
Hannan Pj,
Sprafka Jm,
Burke Gl
Publication year - 1991
Publication title -
epidemiology
Language(s) - English
Resource type - Journals
eISSN - 1531-5487
pISSN - 1044-3983
DOI - 10.1097/00001648-199101000-00003
Subject(s) - leisure time , blue collar , collar , comparability , demography , gerontology , physical activity , medicine , psychology , physical therapy , demographic economics , sociology , mathematics , economics , combinatorics , finance