@book{50408,
	author = {Society for the Study of Human Biology. and Brass, William},
	title = {Biological aspects of demography},
	publisher = {Taylor & Francis},
	year = {1971.},
	series = {Society for the Study of Human Biology. Symposia},
	address = {London},
	note = {Distributed in the U.S.A. by Barnes & Noble, New York.}
}