@book {7512,
	title = {A conchological manual},
	year = {1852},
	note = {xerox},
	publisher = {H. G. Bohn},
	organization = {H. G. Bohn},
	edition = {4},
	address = {London},
	keywords = {avicula, bakevelliidae, bivalvia, catillus, crenatula, gervillia, isognomon, isognomonidae, malleidae, malleus, margarita, meleagrina, mollusca, nacre, pearls, perna, pinctada, Pteria, pteriidae, pterioidea, pulvinites, pulvinitidae, reniella, taxonomy, vulsella},
	author = {Sowerby, G. B., Jr.}
}
@book {6369,
	title = {United States Exploring Expedition during the years 1838-1842 under the command of Charles Wilkes, U.S.N.},
	volume = {12. Mollusca \& Shells. With an atlas of plates.},
	year = {1852},
	pages = {xv+510; atlas: 16+52 hand-colored pts.},
	publisher = {Gould \& Lincoln},
	organization = {Gould \& Lincoln},
	address = {Boston},
	keywords = {avicula, bivalvia, crenatula, isognomon, isognomonidae, mollusca, pinctada, pinna, pinnidae, pinnoidea, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Gould, A. A.}
}
@book {974,
	title = {Syst{\^e}me Silurien du centre de la Boh{\^e}me. 1{\`e}re partie: recherches pal{\'e}ontologiques},
	volume = {6. Classe },
	year = {1852},
	publisher = {L{\textquoteright}auteur},
	organization = {L{\textquoteright}auteur},
	address = {Prague, Paris},
	keywords = {bivalvia, cambrian, devonian, mollusca, ordovician, paleontology, Pterineidae, pterioidea, silurian, taxonomy},
	author = {Barrande, Joachim}
}
@article {1134,
	title = {Aviculacea nova},
	journal = {Zeitschrift f{\"u}r Malakozoologie},
	volume = {9},
	number = {5},
	year = {1852},
	pages = {73-80},
	keywords = {avicula, bivalvia, mollusca, pinctada, Pteria, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Dunker, [W. ]}
}
@book {1191,
	title = {United States Exploring Expedition during the years 1838-1842 under the command of Charles Wilkes, U.S.N.},
	volume = {12. Mollus},
	year = {1852},
	pages = {xv+510; atlas: 16+52 hand-colored pts.},
	publisher = {Gould \& Lincoln},
	organization = {Gould \& Lincoln},
	address = {Boston},
	keywords = {avicula, bivalvia, crenatula, isognomon, isognomonidae, mollusca, pinctada, pinna, pinnidae, pinnoidea, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Gould, A. A.}
}
