Transportation Environment Data Bank index, report, April 1, 1977; (https://digital.library.unt.edu/ark:/67531/metadc1445552/m1/1/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
Transportation Environment Data Bank index, report, April 1, 1977; (https://digital.library.unt.edu/ark:/67531/metadc1445552/m1/1/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .