TY  - GEN
AU  - Potts,Renfrey B.
AU  - Oliver,Robert M.
TI  - Flows in transportation networks
SN  - 0125636504
AV  - HE199.9 
U1  - 388.1/01/84 
PY  - 1972///
CY  - New York
PB  - Academic Press
KW  - Transportation
KW  - Mathematical models
N1  - subject idex , pag 187
ER  -