@book{145665,
	author = {Rowland, Michael and Forthofer, Ron N. and National Center for Health Statistics U.S.},
	title = {Investigation of nonresponse bias},
	publisher = {U.S. Dept. of Health and Human Services, Public Health Service, National Center for Health Statistics},
	year = {[1993]},
	series = {Vital and health statistics.},
	address = {Hyattsville, Md.},
	note = {By Michael L. Rowland and Ronald N. Forthofer.}
}