01029cam a22002771 4500 ss 44000056 DLC 20260227112751.0 871014s1944 dcu s 000 0 eng ss 44000056 (OCoLC)16852181 DLC OCoLC OCoLC DLC premarc HV85 .A48 no. 6 360.72 Perkins, Walter Morris, 1913- Simple methods for representative sampling in studies of public assistance case loads, by Walter M. Perkins ... [Washington] 1944. 1 p. l., 17 p. 27 cm. [U.S.] Bureau of Public Assistance. Public assistance research memorandum no. 6 At head of title: Federal Security Agency, Social Security Board. Reproduced from type-written copy. Sampling (Statistics) Public welfare Statistics. United States. Bureau of Family Services. Public assistance research memorandum ; no. 6. 90893 90893