@book{27080,
	author = {Black, Davidson,},
	title = {A study of Kansu and Honan aeneolithic skulls and specimens from later Kansu prehistoric sites in comparison with north China and other recent crania.},
	publisher = {Geological survey of China,},
	year = {1928-},
	series = {China. Geological survey. Palæontologia sinica, ser. D,},
	address = {Peking,}
}