TY  - BOOK
AU  - Petticrew, Mark 
AU  - Helen Roberts 
TI  - Systematic Reviews in Social Sciences : A Practical guide 
SN  - 1405121101
AV  - H62  .P48 2006 c.1
PY  - 2006///
CY  - Australia 
PB  - Blackwell
KW  - Social sciences
KW  - Research methodology
KW  - Statistical methods
ER  -