@article {Okutani1990,
	title = {{Two new species of Provanna (Gastropoda: Cerithiacea) from snail pit in the hydrothermal vent site at the Mariana Back-Arc Basin}},
	journal = {Venus the Japanese Journal of Malacology},
	volume = {49},
	number = {1},
	year = {1990},
	pages = {19{\textendash}24},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0042-3580},
	author = {Okutani, T}
}
