Spraying and other controls for diseases and insects that attack trees and shrubs
Wester, Horace V.
Spraying and other controls for diseases and insects that attack trees and shrubs - Washington : Government Printing Office, 1968 - 52 p. - Tree preservation bulletin ; 6 . - Tree preservation bulletin ; 6 .
53567
Árboles--Plagas.
Bosques--Protección.
Spraying and other controls for diseases and insects that attack trees and shrubs - Washington : Government Printing Office, 1968 - 52 p. - Tree preservation bulletin ; 6 . - Tree preservation bulletin ; 6 .
53567
Árboles--Plagas.
Bosques--Protección.