Invertebrate zoology - Engemann, Joseph G.; Hegner, Robert William 1880-1942. (New York Collier Macmillan Publishers, 1981)
In the 2d ed. Hegner's name appeared first on t.p.
Reprinted under special agreement with Macmillan Pub. Co., by EDCA Publishing & Distributing Corporation.
Keywords: Invertebrates