Cynipoidea (Hym.) 1905-1950, being a supplement to the Dalla Torre and Kieffer monograph, the Cynipidae in Das Tierreich, Lieferung 24, 1910, and bringing the systematic literature of the world up to date, including keys to families and subfamilies and lists of new generic, specific and variety names
Lewis Hart Weld
Bok Engelsk 1952