@book{56766,
	author = {Nelson, Harold D. and American University Washington, D.C..},
	title = {Costa Rica, a country study},
	publisher = {Headquarters, Dept. of the Army},
	year = {1983},
	series = {Area handbook series},
	address = {Washington, D.C.},
	edition = {2nd ed., 1983.},
	note = {Rev. ed of: Area handbook for Costa Rica / co-authors, Howard I. Blutstein [and others]. 1970.}
}