@book{166641,
	author = {Hitchcock, A.S. and Chase, Agnes.},
	title = {Manual of the grasses of the United States /},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1950.},
	address = {Washington :},
	edition = {2nd ed.,  /},
	note = {Includes index.}
}