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Ethnic, socioeconomic, and sex differences in physical activity among adolescents
James F. Sallis, Joy M. Zakarian, Melbourne F. Hovell, C.Richard HofstetterVolume:
49
Year:
1996
Language:
english
DOI:
10.1016/0895-4356(95)00514-5
File:
PDF, 1.19 MB
english, 1996