Gulls: a guide to identification.
Calton: Poyser, 1982. Octavo, photographs and text illustrations, bookplate, fine copy in dustwrapper. More
Calton: Poyser, 1982. Octavo, photographs and text illustrations, bookplate, fine copy in dustwrapper. More
London: Poyser, (1989. reprint). Octavo, text illustrations, fine copy in dustwrapper. More