Discriminatory Taxation of Common Carriers, Hearings Before the Subcommittee on Surface Transportaiton...90-1, on S. 927, to Amend the Interstate Commerce Act, as Amended, in Order to Make Unlawful, as Unreasonable and Unjust Discrimination Against and an Undue Burden Upon Interstate Commerce, Certain Property Tax Assessments of Common Carrier Property, and for Other Purposes, August 7, 8, 1967