TY  - BOOK
AU  - Petticrew, Mark
AU  - Roberts, Helen
TI  - Systematic reviews in the social sciences: A practical guide
SN  - 1-4051-2110-6
U1  - 300.723/PET 
PY  - 2006///
CY  - Oxford
PB  - Blackwell
KW  - Social sciences-Statistical methods
KW  - Social sciences-Research-Methodology
KW  - Social sciences
ER  -