TY  - BOOK
AU  - Vehovar, Vasja 
AU  - Manfreda, Katja Lozar 
AU  - Callegaro, Mario
TI  - Web survey methodology
SN  - 9780857028617
AV  - HM 538 Cal 
PY  - 2015///
CY  - London
PB  - SAGE Publications
KW  - SURVEYS--METHODOLOGY
KW  - INTERNET SURVEYS
KW  - SOCIAL SCIENCES--RESEARCH METHODOLOGY
ER  -