TY  - BOOK
AU  - Pons Valdo
AU  -  Francis Ray Ed.
TI  - Urban social research:  Problems and prospects   
SN  - 071009471X
U1  - Y33b4.3.N8, M3 
PY  - 1983///
CY  - London
PB  - Routledge and Kegan Paul       
KW  - Urban Sociology
ER  -