TY  - BOOK
AU  - Olsen,Wendy
TI  - Data collection: key debates & methods in social research 
SN  - 9781847872555
PY  - 2012///
CY  - Thousand Oaks, CA
PB  - SAGE Publications
KW  - Social sciences
KW  - Statistical methods
KW  - Research
N1  - Includes index and references : p. [222]-229
ER  -