School opportunities and physical activity frequency in nine year old children
Tracie A. Barnett, Jennifer L. O’Loughlin, Lise Gauvin, Gilles Paradis, James Hanley, Jennifer J. McGrath, Marie LambertVolume:
54
Language:
english
Pages:
8
DOI:
10.1007/s00038-009-7110-0
Date:
May, 2009
File:
PDF, 183 KB
english, 2009