TY  - BOOK
ED  - United States.
TI  - Ponton manual. 1917
T2  - Its Professional papers,
AV  - UG335 .U6 1917
PY  - 1917///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Pontoon bridges
N1  - "War Department. Document no. 492. Office of the Chief of Engineers."
ER  -