Link persistente deste registo: http://id.bnportugal.gov.pt/bib/rnod/28589
Reino Unido. Hidrographic Office.
Santa Maria and the Formigas [Material cartográfico]] : Azores / surveyed by Capt[ai]n A.T.E. Vidal, R[oyal] N[avy] 1844; sculpt. J. & C. Walker . - Londres: Hydrographic Office, [ca 1873] . - 1 mapa