World checklist of threatened birds.
Cambridge: JNCC, 1993. Quarto, softcover. More
Cambridge: JNCC, 1993. Quarto, softcover. More
London: Country Life, 1950. Octavo, photographs, bookplate, very good copy in dustwrapper. More
London: Hammond, Hammond and Company, 1956. Octavo, Cphotographs, chipped dustwrapper. More