Barnard, John Gross,  1815-1882, <br/><br/>
Report on the North Sea Canal of Holland and on the improvement of navigation from Rotterdam to the sea to the chief of engineers, United States Army / 
by J.G. Barnard 
 - 77 páginas +  11 planos 
 - Professional papers of the Corps of Engineers, U.S. Army ;  no. 22 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Navegacion inferior--Paises Bajos
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Rotterdam<br/>Canal del mar del Norte (Países Bajos)
<br/><br/><label>LC Class. No.: </label>TC678.N67  / B37