The demand for transportation : regional and commodity studies in the United States /
Perle, Eugene D.
The demand for transportation : regional and commodity studies in the United States / by Eugene D. Perle - Chicago : Dept. of Geography, University of Chicago, 1964 - xx, 130 p. : maps ; 23 cm. - Research paper (University of Chicago. Dept. of Geography) ; no.95 .
Bibliography : p. 127-130
64-023589
Freight and freightage--Mathematical models--United States
The demand for transportation : regional and commodity studies in the United States / by Eugene D. Perle - Chicago : Dept. of Geography, University of Chicago, 1964 - xx, 130 p. : maps ; 23 cm. - Research paper (University of Chicago. Dept. of Geography) ; no.95 .
Bibliography : p. 127-130
64-023589
Freight and freightage--Mathematical models--United States