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Subject with Hierarchy: Is Not
Is Not Is
Trees > Biotechnology
Subject (Era): Is
Is Is Not
1920
Subject: Is
Is Is Not
Diseases and pests

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1.
Apple fly-speck
Author
Honey, Edwin Earl
Published
1920.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
2.
A comparative study of the spores of Coccomyces hiemalis on different varieties of sweet and sour cherries
Author
Baker, Clarence Everett
Published
1920.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
3.
The leaf spots of the elm
Author
Miles, L. E. (Lee Ellis), 1890-
Published
1920.
Online
Online book
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
4.
A mosiac disease of clover
Author
Kienholz, Raymond (Aaron Raymond), b. 1894
Published
1920.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
5.
Some of the causes of decay of Brazil nuts
Author
Spencer, Edwin Rollin, 1881-
Published
1920.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
6.
Two sooty molds occurring on the mango in Porto Rico
Author
Tehon, L. R. (Leo Roy), 1895-1954
Published
1920.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online