TY  - BOOK
AU  - Coulby, D.
AU  - Harper.T
TI  - Preventing classroom disruption: Policy,Practice and evaluation in Urban schools
SN  - 9780415682626
AV  - DUCE LC4803.G7C68 
PY  - 2012///
CY  - London
PB  - Croom Helm.
N1  - Includes appendix and index
ER  -