@book{26890,
	author = {Black, Davidson,},
	title = {On an adolescent skull of Sinanthropus pekinensis in comparison with an adult skull of the same species and with other hominid skulls, recent and fossil,},
	publisher = {Geological Survey of China,},
	year = {l930.},
	series = {China. Geological survey. Palæontologia sinica, ser. D,},
	address = {Peiping (Peking)}
}