Spring grain-aphis or so-called "green bug" (Toxoptera graminum Rond.)
Contributors: Webster, F. M. 1849-1916.
Series: Entomology Bur. Circ. 2nd Series No. 93
Publisher: [s.n.]
Published: 1907
Place of publication: Washington, D.C
Format: Microform
Subjects: Greenbug.