The Ascalaphidae of the Afrotropical region (Neuroptera).
Sweden: Entomologica Scandinavica, 1992. Octavo, photographs, softcover. More
Sweden: Entomologica Scandinavica, 1992. Octavo, photographs, softcover. More
Stockholm: Statens Naturvetenskapliga Forskningsrad, 1967. Octavo, text illustrations, typescript titlepage, binder's cloth. More