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	volume = {38},
	year = {1997},
	pages = {197-239},
	author = {Herbert, DG}
}
@book {128,
	title = {The Introduced Terrestrial Mollusca of South Africa},
	series = {SANBI Biodiversity Series},
	volume = {15},
	year = {2010},
	author = {Herbert, DG}
}
