@book{23212,
	author = {Coker, R. E.},
	title = {The protection of fresh-water mussels.},
	publisher = {Govt. print. off.,},
	year = {1914.},
	series = {[U.S.] Bureau of fisheries. Doc. 793},
	address = {Washington,},
	note = {At head of title:  Department of commerce...},
	url = {http://hdl.loc.gov/loc.gdc/scd0001.00029036020}
}