TY  - BOOK
AU  - Charles H Backstrom
ED  - Gerald Hursh-César
TI  - Survey research
SN  - 081010251
AV  - JA86 B3
PY  - 1981///
CY  - New York 
PB  -  Wiley
KW  - Public opinion polls.
KW  - Social sciences
KW  - Research.
KW  - Public opinion polls
ER  -