@article {27061,
	title = {On the hydras of Alberta and the Northwest Territories},
	volume = {Bulletin No. 199, Contributions to Zoology},
	year = {1963},
	pages = {13},
	institution = {National Museum of Canada },
	author = {Adshead, P. C. and Mackie, G. O. and Paetkau, P.}
}
