State seeks ways to boost tax take from trucks using diesel fuel, by R.E. Bjorkback. (in Natl, pet, news, vol. 43, A p r . 11, 1951, PP. SI-32)
Taxation of the trucking industry, by R.W. Lindholm. Columbia: Bureau of Business Research; Ohio: State Univ., 1 9 5 1. 1 41 p .