An atlas of speciation in African passerine birds.
London: Trustees of the British Museum (Natural History), 1970. Small folio, coloured frontispiece, maps, signature, bookplate, very good copy in dustwrapper. More
London: Trustees of the British Museum (Natural History), 1970. Small folio, coloured frontispiece, maps, signature, bookplate, very good copy in dustwrapper. More
London: Academic Press, 1966. Octavo, folding map, dustwrapper. More
London: British Museum (Natural History), 1957. Large octavo, maps, publisher's wrappers, a very good copy. More