TY  - BOOK
AU  - Olsen, Wendy.
TI  - Data collection
SN  - 9781847872555
U1  - RES 300.72 O47 2012 
PY  - 2012///
CY  - Los Angeles
PB  - Sage Publication.
KW  - Social sciences - research- methodology
N1  - Includes bibliographical references and indexes
ER  -