TY  - BOOK
AU  - Blau Peter M
AU  -  Schwartz Joseph F
TI  - Crosscutting social circles :  Testing a macro-structural Theory of Intergroup Relation   
U1  - Y, M4 
PY  - 1984///
CY  - New York
PB  - Academic Press        
N1  - Bibliography : P 237-248
ER  -