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	1.	Final-year-of life pacemaker recipients. [electronic resource] by Hefflin, B J Producer: 19981123 In: Journal of the American Geriatrics Society vol. 46 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Out-of-hospital deaths due to asthma in North Carolina, 1980-1988. [electronic resource] by Hefflin, B J Etzel, R A Producer: 19950622 In: American journal of preventive medicine vol. 11 Availability: No items available. Save to lists Add to cart (remove)
	3.	Blood benzene concentrations in workers exposed to oxygenated fuel in Fairbanks, Alaska. [electronic resource] by Moolenaar, R L Hefflin, B J Ashley, D L Middaugh, J P Etzel, R A Producer: 19970318 In: International archives of occupational and environmental health vol. 69 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Methyl tertiary butyl ether in human blood after exposure to oxygenated fuel in Fairbanks, Alaska. [electronic resource] by Moolenaar, R L Hefflin, B J Ashley, D L Middaugh, J P Etzel, R A Producer: 19941101 In: Archives of environmental health vol. 49 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Surveillance for dust storms and respiratory diseases in Washington State, 1991. [electronic resource] by Hefflin, B J Jalaludin, B McClure, E Cobb, N Johnson, C A Jecha, L Etzel, R A Producer: 19940616 In: Archives of environmental health vol. 49 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)