@book{3129,
	author = {Spangles, Paul J. and Perkins, Philip D.},
	title = {A revision of the neotropical aquatic beetle genus Stenhelmoides (Coleoptera: Elmidae)},
	publisher = {Smithsonian Institution,},
	year = {1989},
	series = {Smithsonian contributions to zoology},
	address = {Washington :},
	note = {D48-187}
}