TY  - BOOK
AU  - Couvreur,M.L.
ED  - International congress on Inland navigation
TI  - On tolls and fees collected on navigable ways: report 
PY  - 1892///
CY  - Paris
PB  - Imprimeric Generale Lahure
KW  - Roads
KW  - Design and construction
N1  - 7th question
ER  -