@book{90293,
	author = {Penrose, L. S.},
	title = {A clinical and genetic study of 1280 cases of mental defect,},
	publisher = {H. M. Stationery off.,},
	year = {1938.},
	address = {London,},
	note = {At head of title: ...  Privy council.  Medical research council.}
}