TY  - BOOK
AU  - Bethlehem Jelke
AU  - Biffignandi Silvia
TI  - Handbook of web surveys
SN  - 978-0-470-60356-7
U1  - 001.433 
PY  - 2012///
CY  - New Jersey
PB  - John Wiley
KW  - Internet surveys
KW  - Social sciences-research
KW  - Social sciences-statistics
KW  - Social surveys
KW  - Surveys-methodology
ER  -