Neotropical ornithology.
Washington: American Ornithologists Union, 1985. Quarto, illustrations, signed by the author. More
Washington: American Ornithologists Union, 1985. Quarto, illustrations, signed by the author. More
Sao Paulo: Dalgas-Ecoltec Ecologica Tecnica, 1981. Octavo, colour plates, softcover, inscribed by the author for Ian Rowley. Text in Portugese. More
Faringdon: Ferendune Books, 1979. Octavo, text illustrations, iscribed by the author for Ian Thornton, laminated boards. More