TY  - BOOK
AU  - Valkenburg , M. E. Van
TI  - Network analysis
SN  - 0 87692 156 10
U1  - S/C-S/T D66 L4;14 
PY  - 1993///
CY  - New Delhi
PB  - Prentice -Hall of India
N1  - Includes Appendix and Index
ER  -