TY  - BOOK
AU  - Perle,Eugene D.
TI  - The demand for transportation: regional and commodity studies in the United States,
T2  - University of Chicago. Dept. of Geography. Research paper
SN  -   
AV  - H31 .C514 no. 95 1964
PY  - 1964///
CY  - Chicago
PB  - [Dept. of Geography, University of Chicago]
KW  - Freight and freightage
ER  -