˜The œfortress of Almeida, on the Coa River

Eitemau Tebyg

• Vila Nova de Foz Côa
  gan: Silva Adelino Rocha Ferreira da, et al.
  Cyhoeddwyd: (1991)
• Copy of a military survey between the River Manique beyong Oeyras and the River Sacavem including both banks of the River Tagus
  Cyhoeddwyd: (1800)
• Bowles's draught of the river Thames, from it's spring in Gloucester-Shire, to it's influx into the sea
  gan: Bowles Carington, et al.
  Cyhoeddwyd: (1787)
• Chart of the entrance of the river Tagus
  gan: Chapman William, et al.
  Cyhoeddwyd: (12th August, 1807)
• Reclamation projects, gaging sations and river surveys
  gan: Estados Unidos Geological Survey
  Cyhoeddwyd: ([1902])