TY  - BOOK
AU  - Erdos,Paul L.
AU  - Morgan,Arthur J.
TI  - Professional mail surveys
SN  - 070195706
U1  - 658.83 23
PY  - 1970///
CY  - New York
PB  - McGraw-Hill
KW  - Mail surveys
KW  - Social surveys
KW  - Public opinion polls
N1  - Bibliography: p. 276-277 & Includes Index
ER  -