@article {29710,
	title = {Past, current and potential wildlife census techniques in western and prairie Canadian national parks. Preliminary report no. 1},
	volume = {Unpublished report CWS-88-74},
	year = {1974},
	pages = {91},
	institution = {Canadian Wildlife Service},
	address = {Edmonton, AB},
	author = {Venables, R. L. and Stelfox, J. G.}
}
