TY  - BOOK
AU  - Wellman Barry Ed.
AU  -  Berkowitz S D Ed.
TI  - Social structures:  A network approach   
T2  - Structural Analysis in the Social Sciences;2
SN  - 0521244412
U1  - Y, M8 
PY  - 1988///
CY  - London
PB  - Cambridge University Press        
N1  - Bibliography chapterwise
ER  -