TY  - BOOK
AU  - Wellman B Ed.
AU  -  Berkowitz S D Ed.
TI  - Social structures: A network approach
T2  - Structural analysis in the social science; 2
U1  - Y, M8 
PY  - 1988///
CY  - Cambridge
PB  - CUP         
KW  - sociology
ER  -