Papers relating to the improvement of the navigation of the River Douro from its mouth to the Barca de Vilvestre in Spain
Subtitle: and to the maps of that river, and of the wine-district of the Alto-Douro.
Publisher: Commercial Print. Office
Published: 1844
Place of publication: Oporto
Language: eng
Number of pages: 19
Subjects: Duero River -- Navigation; Trás-os-Montes e Alto Douro, Portugal -- Maps