Louvain, Paris, éditions Nauwelaerts, analecta mediaevalia namurcensia 25, 1968. Fort in-8°, lxxxiii-719 pp., non coupé, intérieur frais. Br. Très bon état général.
Introduction en anglais et texte en latin.
1971 / 1985 60, 151 p., 501 text figures, paperbound (original printed covers). The British Museum (Natural History). The second paper contains many new species. Both published in the Bulletin, Entomology series, and in an "as new" condition.
1976 112 p., 366 text figures, paperbound (original printed covers). The British Museum (Natural History). With many new species. This is volume 33, number 4 of the Bulletin, Entomology series. A copy in mint condition.
1976 112 p., 366 text figures, paperbound (original printed covers). The British Museum (Natural History). With many new species. This is volume 33, number 4 of the Bulletin, Entomology series. A copy in mint condition.