TY  - BOOK
AU  - Potts Renfrey B.
AU  -  Oliver Robery M.
TI  - Flows In Transportation Networks
T2  - Mathematics in science and engineering: A series of monographs and textboobs; 90
U1  - B0aD, L2 
PY  - 1972///
CY  - New York    
PB  -  Academic Press       
ER  -