TY  - BOOK
AU  - Schuman,Howard
AU  - Presser,Stanley
TI  - Questions and answers in attitude surveys
T2  - Quantitative studies in social relations
SN  - 0-12-631350-4
AV  - H62 S28
PY  - 1981///
CY  - San Diego, Calif.
PB  - Academic
N1  - Incluye bibliografia
ER  -