A study of the aphididae (homoptera) of East Africa.
London: Order of the Trustees, 1958. Octavo, text illustrations, stamp, publisher's cloth. More
London: Order of the Trustees, 1958. Octavo, text illustrations, stamp, publisher's cloth. More
London: Order of the Trustees, 1961. Octavo, text illustrations, inscribed by the author, publisher's cloth. More
Cambridge: [Cambridge] University Press, 1956-1968. Octavo, very good set in dustwrappers. More