Johnson, E. R. 1., Huebner, G. G. 1., & Wilson, G. L. 1. (1940). Transportation: Economic principles and practices. Appleton-Century company, incorporated.
சிகாகோ பாணியிலான மேறà¯à®•ோளà¯à®•ளà¯Johnson, Emory R. 1864-1950., Grover G. 1884-1964 Huebner, and G. Lloyd 1896-1956 Wilson. Transportation: Economic Principles and Practices. Appleton-Century company, incorporated, 1940.
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