@book {7514,
	title = {Appendix to marine shells of South Africa: a catalogue of all the known species with references to figures in various works, descriptions of new species, and figures of such as are new, little known, or hitherto unfigured},
	year = {1897},
	pages = {42},
	publisher = {Sowerby},
	organization = {Sowerby},
	address = {London},
	keywords = {avicula, biogeography, bivalvia, electroma, isognomon, isognomonidae, malleidae, malleus, mollusca, perna, pinctada, pinna, pinnidae, pinnoidea, pterelectroma, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Sowerby, G. B.}
}
@book {1577,
	title = {Appendix to marine shells of South Africa: a catalogue of all the known species with references to figures in various works, descriptions of new species, and figures of such as are new, little known, or hitherto unfigured},
	year = {1897},
	pages = {42},
	publisher = {Sowerby},
	organization = {Sowerby},
	address = {London},
	keywords = {avicula, biogeography, bivalvia, electroma, isognomon, isognomonidae, malleidae, malleus, mollusca, perna, pinctada, pinna, pinnidae, pinnoidea, pterelectroma, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Sowerby, G. B.}
}
