@article {43090,
	title = {Comparative evaluation of vesel elements in Salix spp. (Salicaeae) endemic to the Athabasca sand dunes of northern Saskatchewan, Canada},
	volume = {88},
	year = {2001},
	pages = {583-587},
	publisher = {American Journal of Botany},
	author = {Cooper, Ranessa L. and Cass, David D.}
}
