@techreport{ h0026,
 title = "New Sources and New Techniques for the Study of Secular Trends in Nutritional Status, Health, Mortality, and the Process of Aging",
 author = "Robert William Fogel",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Historical Working Paper Series",
 number = "26",
 year = "1993",
 month = "November",
 URL = "http://www.nber.org/papers/h0026",
}