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	1.	Calcium addition at the Hubbard Brook Experimental Forest increases sugar storage, antioxidant activity and cold tolerance in native red spruce (Picea rubens). [electronic resource] by Halman, Joshua M Schaberg, Paul G Hawley, Gary J Eagar, Christopher Producer: 20080811 In: Tree physiology vol. 28 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Calcium and aluminum impacts on sugar maple physiology in a northern hardwood forest. [electronic resource] by Halman, Joshua M Schaberg, Paul G Hawley, Gary J Pardo, Linda H Fahey, Timothy J Producer: 20140707 In: Tree physiology vol. 33 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Inconclusive evidence of Juniperus virginiana recovery following sulfur pollution reductions. [electronic resource] by Schaberg, Paul G Hawley, Gary J Rayback, Shelly A Halman, Joshua M Kosiba, Alexandra M Producer: 20140312 In: Proceedings of the National Academy of Sciences of the United States of America vol. 111 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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