@book {113,
	title = {Land Mollusca of North America north of Mexico},
	series = {The Academy of Natural Sciences of Philadelphia Monograph},
	volume = {3},
	number = {2},
	year = {1948},
	pages = {748-770},
	author = {Pilsbry, HA}
}
@book {505,
	title = {Land Snails of British Columbia.},
	series = {Royal British Columbia Museum Handbook},
	year = {2004},
	pages = {iv, 188 pp.},
	publisher = {Royal BC Museum},
	organization = {Royal BC Museum},
	address = {Victoria},
	author = {Forsyth, R.G.}
}
