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	1.	Socioeconomic status differences in health behaviors related to obesity: the Healthy Worker Project. [electronic resource] by Jeffery, R W French, S A Forster, J L Spry, V M Producer: 19920130 In: International journal of obesity vol. 15 Availability: No items available. Save to lists Add to cart (remove)
	2.	Identifying correlates of walking for exercise: an epidemiologic prerequisite for physical activity promotion. [electronic resource] by Hovell, M F Sallis, J F Hofstetter, C R Spry, V M Faucher, P Caspersen, C J Producer: 19900409 In: Preventive medicine vol. 18 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Recruiting survey respondents to mailed surveys: controlled trials of incentives and prompts. [electronic resource] by Spry, V M Hovell, M F Sallis, J G Hofsteter, C R Elder, J P Molgaard, C A Producer: 19890804 In: American journal of epidemiology vol. 130 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Lifetime history of relapse from exercise. [electronic resource] by Sallis, J F Hovell, M F Hofstetter, C R Elder, J P Faucher, P Spry, V M Barrington, E Hackley, M Producer: 19910415 In: Addictive behaviors vol. 15 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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