Values of time savings of commercial vehicles / William G. -Adkins , Allen W. Ward.
Adkins, William G.
Values of time savings of commercial vehicles / William G. -Adkins , Allen W. Ward. - Washington, D.C. : HRB - 74 p. - Report / Highway Research Board ; 33 .
Values of time savings of commercial vehicles / William G. -Adkins , Allen W. Ward. - Washington, D.C. : HRB - 74 p. - Report / Highway Research Board ; 33 .