@article {7243,
	title = {An analytical approach to a classification of Bivavlia},
	journal = {Philosophical Transactions of the Royal Society of London Series B-Biological Sciences},
	volume = {284},
	year = {1978},
	note = {PDF},
	pages = {425-436},
	keywords = {anatomy, bivalvia, classification, ecology, evolution, mollusca, phylogeny},
	author = {Purchon, R. D. and Clarke, G.}
}
