TY  - BOOK
AU  - Erdos,Paul L.
AU  - Morgan,Arthur James
TI  - Professional mail surveys
AV  - HF5415.3 .E7
U1  - 311/.28 
PY  - 1970///]
CY  - New York
PB  - McGraw-Hill
KW  - Mail surveys
KW  - Local
KW  - Public opinion polls
KW  - Social Surveys
N1  - Bibliography: p. 276-277
ER  -