@article {33026,
	title = {Implications of morphological and anatomical variation in Abies balsamea and A. lasiocarpa (Pinaceae) from Western Canada},
	volume = {68},
	year = {1981},
	pages = {843-854},
	publisher = {American Journal of Botany},
	url = {http://www.jstor.org/stable/2443190},
	author = {Parker, William H. and Maze, Jack and Bradfield Gary E.}
}
