@article {4658,
	title = {Synchronic Large-scale Disturbances and Red Spruce Growth Decline},
	journal = {Canadian Journal of Forest Research},
	volume = {23},
	year = {1993},
	pages = {1361-1374},
	keywords = {Air pollution, Red spruce, Trees -- Growth decline},
	author = {Reams, Gregory A and Van Deusen, Paul C.}
}
@article {4657,
	title = {Two Hundred Year Variation of Southern Red Spruce Radial Growth as Estimated by Spectral Analysis},
	journal = {Canadian Journal of Forest Research},
	volume = {23},
	year = {1993},
	pages = {291-301},
	keywords = {Air pollution, Climate, Red spruce, Trees -- Growth},
	author = {Reams, Gregory A and Nicholas, Niki Stephanie and Zedaker, Shephard M}
}
