TY  - BOOK
AU  - Olsen, Wendy
TI  - Data collection :Key debates and methods in social research 
SN  - 978-1-84787-256-2
AV  - H 62  .O47 2012 
PY  - 2012///
CY  - Los Angeles
PB  - Sage
KW  - 1. Social sciences---Research---methodology
ER  -