Proceedings - Pennsylvania Highway Transportation Conference and Workshop, November 13 - 15, 1968, University Park, Pennsylvania : "Designs for service"
Pennsylvania Highway Transportation Conference and Workshop ; 2 ; 1968 ; University Park, Pa. Pennsylvania Highway Transportation Conference and Workshop ; 2 (University Park, Pa.) : 1968.11.13-15
1969
X, 113 Bl.
Conference Proceedings
English