Map showing spread of Mexican cotton boll weevil from 1892 to 1920.

Bibliographic Details

Corporate Author:	United States. Bureau of Entomology
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [publisher not identified], 1921.
Series:	Entomology Bur. E Series No. E-207
Subjects:	Maps. Pests. Electronic books.
Online Access:	Connect to the full text of this electronic document