@techreport{ w4638,
 title = "Economic Growth, Population Theory, and Physiology: The Bearing of Long-Term Processes on the Making of Economic Policy",
 author = "Robert W. Fogel",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "4638",
 year = "1994",
 month = "September",
 URL = "http://www.nber.org/papers/w4638",
}