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Understanding 9/11Circular No. 122
"Issued April 22, 1911."
At head of title: United States Department of Agriculture, Bureau of Entomology
Introduction. pp. 1
Distribution -- Description of the species. pp. 3
Investigations in the Imperial Valley of Southern California -- Seasonal history in the Imperial Valley. pp. 4
Two classes of ranches--pasture rances and hay ranches. pp. 6
Food plants -- Insect enemies. pp. 7
Other natural enemies. pp. 9
Methods of control -- Insecticides. pp. 10
System of crop culture. pp. 11
Results obtained. pp. 13
Protective measures advised. pp. 14
"Issued April 22, 1911."
At head of title: United States Department of Agriculture, Bureau of Entomology
Introduction. pp. 1
Distribution -- Description of the species. pp. 3
Investigations in the Imperial Valley of Southern California -- Seasonal history in the Imperial Valley. pp. 4
Two classes of ranches--pasture rances and hay ranches. pp. 6
Food plants -- Insect enemies. pp. 7
Other natural enemies. pp. 9
Methods of control -- Insecticides. pp. 10
System of crop culture. pp. 11
Results obtained. pp. 13
Protective measures advised. pp. 14
Notes
No copyright page found. No table-of-contents pages found.
- External-identifier
-
urn:oclc:record:1039509138
![[WorldCat (this item)]](/images/worldcat-small.png "[WorldCat (this item)]")
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