Green-bug or spring grain-aphis : How to prevent its periodical outbreaks.

Bibliographic Details
Format:	Government Document eBook
Language:	English
Published:	[Washington] : GPO, 1921.
Series:	Farmers' Bull. No. 1217
Subjects:	Maps. Pests > Control. Electronic books.
Online Access:	Connect to the full text of this electronic document

Description
Item Description:	Electronic resource.
Physical Description:	1 online resource (11 pages)