TY  - BOOK
TI  - Object-lesson and experimental roads, and bridge construction, 1912-13
AV  - S21 .A7 no. 53
PY  - 1913///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Bridges
KW  - Design and construction
KW  - Roads
N1  - Contribution from the Office of Public Roads
ER  -