TY  - BOOK
AU  - National Bureau of Economic Research
ED  - National Bureau of Economic Research
TI  - Transportation economics :  A conference of the Uni   
T2  - Its Special Conference Series. 17
U1  - X4z7, K5 
PY  - 1965///
CY  - New York
PB  - National Bureau of Economic Research     
KW  - Transport Economics
ER  -