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511. Fumigation. Fumigation of citrus trees for control of insect pests; [by R. S. Woglum].

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [July, 1923, reprint 1928.]
SuDoc number:: A 1.9:1321/1-2

512. Fumigation. Fumigation of ornamental greenhouse plants with hydrocyanic-acid gas; [by] E. R. Sasscer and A. D. Borden.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: Oct. 1917, [reprint] 1928
SuDoc number:: A 1.9:880/1-5

513. Green-bug or spring grain-aphis, how to prevent its periodical outbreaks; [by] W. R. Walton.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [June, 1921, reprint with changes] 1928
SuDoc number:: A 1.9:1217/1-4

514. Harlequin cabbage bug and its control; [by F. H. Chittenden].

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [Feb. 1920, reprint 1928.]
SuDoc number:: A 1.9:1061/1-4

515. Honey. It's all good honey; [poster].

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [1928]
SuDoc number:: A 9.9:H 75/2

516. Horse-flies. Experimental dissemination of tabanid egg parasite Phanurus emersoni Girault and biological notes on species; by D. C. Parman.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: Jan. 1928
SuDoc number:: A 1.4/2:18

517. Insecticides. Information for fruit growers about insecticides, spraying apparatus, and important insect pests; [by] A. L. Quaintance and E. H. Siegler.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [Feb. 1918, revised Nov. 1920, reprint with slight changes] 1928
SuDoc number:: A 1.9:908/2-6

518. Insects injurious to ornamental greenhouse plants; [by C. A. Weigel and E. R. Sasscer].

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [Reprint 1928.]
SuDoc number:: A 1.9:1362/1-2

519. Insects. Insect enemies of flower garden; [by C. A. Weigel and William Middleton].

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [Aug. 1926, revised June, 1927, reprint 1928.]
SuDoc number:: A 1.9:1495/2-2

520. Insects. The more important apple insects; [by A. L. Quaintance and E. H. Siegler].

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [Sept. 1922, reprint 1928.]
SuDoc number:: A 1.9:1270/1-4

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