On tolls and fees collected on navigable ways :  report / 
M. L. Couvreur 
 - Paris :  Imprimeric Generale Lahure,  1892 
 - 22 p. ;  26 cm. 
<br/><br/> 7th question 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roads--Design and construction