@book{107316,
	author = {Callicott, J. Baird. and ebrary, Inc.},
	title = {Companion to A Sand County almanac},
	publisher = {Univ. Of Wisconsin Press,},
	year = {c1987.},
	address = {Madison, Wis. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10355645}
}