@book {631,
	title = {Compendium of landshells : a color guide to more than 2,000 of the world{\textquoteright}s terrestrial shells},
	year = {1989},
	pages = {240},
	publisher = {American Malacologists},
	organization = {American Malacologists},
	address = {Melbourne},
	author = {R.T. Abbott}
}
