TY  - DATA
T1  - School Culture, Climate, and Violence: Safety in Middle Schools of the Philadelphia Public School System, 1990-1994
AU  - Welsh, Wayne N.
AU  - Jenkins, Patricia H.
AU  - Greene, Jack R.
PY  - 2006
DO  - 10.3886/ICPSR02026.v1
PB  - Inter-university Consortium for Political and Social Research [distributor]
ER  -