TY  - BOOK
ED  - United States.
TI  - Ponton manual
T2  - Its Professional papers,
AV  - UG335 .U6 1915
PY  - 1915///
CY  - Washington
PB  - Govt. print. off.
KW  - Pontoon bridges
N1  - "War department. Document no. 492. Office of the chief of engineers."
ER  -