Author: HAUPT H. :
Title: Pompilidae (Hymenoptera sphecoidea).
Description: .: 2. Bruxelles, Institut des Parcs Nationaux du Congo Belge, 1950, lg in-8° 28 x 18 cm, 62 pp, 25 ills., index, sewn, printed stiff wrapper, unopened pages, ex-library stamps. Text in German. Publ. in the series "I'Exploration du Parc National Albert, Mission G. F. De Witte (1933-1935)", fascicule 34. .

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