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	1.	Air pollution and forest health: toward new monitoring concepts. [electronic resource] by Percy, K E Ferretti, M Producer: 20040913 In: Environmental pollution (Barking, Essex : 1987) vol. 130 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Air quality in natural areas: interface between the public, science and regulation. [electronic resource] by Percy, K E Karnosky, D F Producer: 20080403 In: Environmental pollution (Barking, Essex : 1987) vol. 149 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Impacts of greenhouse gases on epicuticular waxes of Populus tremuloides Michx.: results from an open-air exposure and a natural O3 gradient. [electronic resource] by Mankovská, B Percy, K E Karnosky, D F Producer: 20051222 In: Environmental pollution (Barking, Essex : 1987) vol. 137 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	New exposure-based metric approach for evaluating O(3) risk to North American aspen forests. [electronic resource] by Percy, K E Nosal, M Heilman, W Dann, T Sober, J Legge, A H Karnosky, D F Producer: 20070723 In: Environmental pollution (Barking, Essex : 1987) vol. 147 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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