Perkins, Leaf-Hoppers

Entomologie – Insektenkunde Perkins, R.C.L. Leaf Hoppers and their Natural Enemies. 2 parts: Introduction. Leaf-Hoppers and their Natural Enemies. (Pt. I. Dryinidae Honolulu. 1905/1906. XXXII. 69 Seiten. Textabb. Report of Work of the Experiment Station of the Hawaiian Sugar Plant Assoc. Division of Ent. Bull. 1.