@book{United States. Dept. of Health1968,
author = {United States. Dept. of Health, Education, and Welfare},
title= {United States Life Tables by Causes of Death: 1959-1961. (Life Tables: 1959-61, Volume 1, No. 6)},
year = {1968},
address = {Washington, DC},
publisher = {U.S. Government Printing Office},
}