American species of the genus Sceliphron Klug
Subtitle: The Spruce Gall Louse (Chermes abietis L.) The host of Ablerus clisiocampae Ashmead
Published: 1921
Language: eng
Subjects: Sceliphron; Spruce gall louse
Other titles: The Spruce gall louse.; The host of Ablerus Clisiocampae Ashmead.
Notes: Thesis (Ph.D.)--Massachusetts Agricultural College, 1921.