TY  - BOOK
AU  - Perkins,Walter Morris
TI  - Simple methods for representative sampling in studies of public assistance case loads,
T2  - [U.S.] Bureau of Public Assistance. Public assistance research memorandum
AV  - HV85 .A48 no. 6
U1  - 360.72 
PY  - 1944///
CY  - [Washington]
KW  - Sampling (Statistics)
KW  - Public welfare
KW  - Statistics
N1  - At head of title: Federal Security Agency, Social Security Board; Reproduced from type-written copy
ER  -