@article {6046,
	title = {Permian brachiopods of West Texas, I},
	journal = {Smithsonian Contributions to Paleobiology},
	volume = {14},
	year = {1972},
	note = {PDF},
	pages = {ix+231},
	keywords = {biogeography, brachiopoda, fossil record, paleoecology, paleozoic, permian, stratigraphy, taphonomy},
	author = {Cooper, G. Arthur and Grant, Richard E.}
}
