Studies on the germ cell of aphids.

Bibliography: p. 21.

Revision of the North American Empidæ--a family of two-winged insects.

From the Proceedings of the United States National Museum, vol. XVIII, p. 387-440.

A revision of the North American aphids of the genus Myzus /

Copy 2: Amer. Ent. Soc. QL523.A6M3.

Important biological and morphological characteristics of the foliar-feeding aphids of pecan /

Issued May 1978.

UM football leather winged helmet, ca. 1940 model

[may be photo of a reproduction helmet, ca. 1992]