TY  - BOOK
AU  - Roberts, Fred S.
TI  - Graph theory and its applications to problems of society
SN  - 9780898710267 (pbk)
U1  - 300.151 22
PY  - 1978///
CY  - Philadelphia : 
PB  - Society for Industrial and Applied Mathematics, 
KW  - Social sciences-Mathematical models-Congresses.
ER  -