@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}
}
@article {217,
	title = {The recent Gastropoda of Oklahoma, part VIII. The slug families Limacidae, Arionidae, Veronicellidae, and Philomycidae.},
	journal = {Proceedings of the Oklahoma Academy of Science},
	volume = {60},
	year = {1980},
	pages = {29-35},
	author = {Branson, BA}
}
