@book {1749,
	title = {Freshwater planarians (Turbellaria) of North America},
	series = {Biota of freshwater ecosystems identification manual no. 1.},
	year = {1972},
	publisher = {Washington, U.S. Environmental Protection Agency},
	organization = {Washington, U.S. Environmental Protection Agency},
	address = {Washington, D.C.},
	doi = {http://dx.doi.org/10.5962/bhl.title.4020},
	url = {http://www.biodiversitylibrary.org/bibliography/4020$\#$/summary},
	author = {Roman Kenk}
}
