@article {3887,
	title = {Taxonomy of Abies in the Southern Appalachians: Variation in Balsam Monoterpenes and Wood Properties},
	journal = {Forest Science},
	volume = {20},
	year = {1974},
	month = {March},
	pages = {32-40},
	keywords = {Fraser fir, Trees -- Classification and description},
	author = {Thor, Eyvind and Barnett, Paul E}
}
@article {12435,
	title = {Natural Variation in Abies of the Southern Appalachians},
	journal = {Forest Science},
	volume = {15},
	year = {1969},
	month = {September},
	pages = {238-245},
	keywords = {Fraser fir},
	author = {Robinson, John F and Thor, Eyvind}
}
@mastersthesis {12443,
	title = {Natural Variation in Abies of the Southern Appalachians},
	volume = {Master of Science},
	year = {1968},
	month = {August},
	school = {University of Tennessee},
	address = {Knoxville, TN},
	keywords = {Clingmans Dome, Fraser fir},
	url = {http://trace.tennessee.edu/utk_gradthes/3250/},
	author = {Robinson, John F}
}
@article {3565,
	title = {American Chestnut in the Southern Appalachians},
	journal = {Journal of Forestry},
	volume = {65},
	year = {1967},
	note = {Ilustrations},
	month = {February},
	pages = {121-122},
	keywords = {Trees -- Classification and description, Trees -- Growth},
	author = {MacDonald, R. D and Thor, Eyvind}
}
