@book{12271,
	author = {Hirsch, Hans G.},
	title = {Effects of changes in use of seasonal workers on U.S.-Mexican agricultural trade and balance of payments},
	publisher = {Economic Research Service, U.S. Dept. of Agriculture},
	year = {[1967]},
	series = {[United States. Dept. of Agriculture. Economic Research Service] ERS-foreign},
	address = {Washington]}
}