@article {549,
	title = {Gastropod phylogeny and systematics.},
	journal = {Annual Review of Ecology and Systematics},
	year = {1992},
	pages = {311-338},
	author = {Bieler, R.}
}
@book {778,
	title = {Henry and Arthur Adams{\textquoteright}s new molluscan names},
	year = {1992},
	pages = {63 pp},
	publisher = {National Museum of Wales},
	organization = {National Museum of Wales},
	address = {Cardiff},
	author = {Trew, A.}
}
@article {766,
	title = {Introduction and dispersal of apple snails (Ampullariidae) on Guam},
	journal = {Pacific Science Association Information Bulletin},
	volume = {44},
	year = {1992},
	pages = {12-14},
	author = {Smith, B. D.}
}
