TY  - GEN
AU  - Sapsford, Roger
AU  - Sapsford, Roger
AU  - Jupp, Victor
TI  - Data collection and analysis / 
SN  - 9780761943624
AV  - HA29 SAP 2006 
PY  - 2006///
CY  - London ; Thousand Oaks, Calif. : 
PB  - Sage in association with Open University, 
KW  - Social sciences
KW  - Statistical methods
KW  - Research
N1  - Previous ed.: 1996
Includes bibliographical references and index
ER  -