A key to the principal orders and families of insects,
Metcalf, Zeno Payne, 1885-1956.
A key to the principal orders and families of insects, by Z.P. Metcalf ... and C.L. Metcalf. - Third edition, revised and illustrated. - [Urbana? Ill.] The authors [c1928] - 23 p. illus 28 cm.
Bibliography: p. [3]
agr30001354
Insects.
QL468 / .M4 1928
A key to the principal orders and families of insects, by Z.P. Metcalf ... and C.L. Metcalf. - Third edition, revised and illustrated. - [Urbana? Ill.] The authors [c1928] - 23 p. illus 28 cm.
Bibliography: p. [3]
agr30001354
Insects.
QL468 / .M4 1928