@article {536,
	title = {The type specimens of Sipuncula and Echiura described by J.E. Gray and W. Baird in the collections of the British Museum of Natural History},
	journal = {Bulletin of the British Museum of Natural History},
	volume = {20},
	number = {2},
	year = {1970},
	pages = {49-72},
	author = {Rice, M. E. and Stephen, A. C.}
}
