TY  - BOOK
AU  - Olsen,Wendy
TI  - Data collection: key debates & methods in social research 
SN  - 9781847872555
U1  - 001.891 OLS 
PY  - 2011///
CY  - Thousand Oaks, CA
PB  - SAGE Publications
KW  - Research Methodology
ER  -