TY  - BOOK
AU  - Callegaro, Mario
AU  - Lozar Manfreda, Katja
AU  - Vehovar, Vasja
TI  - Web Survey Methodology
SN  - 9780857028617
U1  - 001.433 
PY  - 2015///
CY  - London
PB  - Sage Publications
KW  - Social sciences - Research - Methodology
ER  -