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
Lincoln: Manaaki Whenua Press, 1992. Octavo, paperback, illustrations. More