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Roark, R. C. (Ruric Creegan)
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Biological insecticides

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Current results range from 1942 to 1945

1.
A review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C. : U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1945]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
2.
A review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1945]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
3.
Review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C. : United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1945]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
4.
A review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1944]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
5.
Review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C.] : United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, [1944]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
6.
A review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1943]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
7.
A review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1943]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
8.
A review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1943]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
9.
A review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington : United States Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1943]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
10.
A review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia, and related plants
Author
Roark, R. C. (Ruric Creegan)
Published
[Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1942]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online