@inbook {490,
	title = {Sipunculida},
	booktitle = {Encyclopedia Britannica, Vol. 20},
	year = {1947},
	note = {in 1970 version in uc library, sipunculida in vol 20:571-574 2 PAPERS W{\textquoteright} THIS NUMBER 1067. 1998; joe s. got another version.},
	pages = {717-718b},
	publisher = {University of Chicago},
	organization = {University of Chicago},
	address = {Chicago},
	author = {Pickford, G. E.}
}
