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681. Foul-brood. Control of American foulbrood: [by] E. F. Phillips.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [Mar. 1920, reprint 1926.]
SuDoc number:: A 1.9:1084/1-6

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

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: [Reprint 1926.]
SuDoc number:: A 1.9:1061/1-3

683. Hessian flies. Determination by 5-square-yard method of yield of wheat plots used in studies of Hessian fly, Phytophaga destructor Say; by W. B. Cartwright and W. H. Larrimer.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: 1926
SuDoc number:: A 1.23/a:H 468/8

684. Hessian flies. Determination of percentage of infestation by Hessian fly, Phytophaga destructor Say; by W. H. Larrimer and W. B. Cartwright.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: 1926
SuDoc number:: A 1.23/a:H 468/10

685. Hessian flies—Continued. Determination of percentage of parasitism of Hessian fly, Phytophaga destructor Say; by W. H. Larrimer and W. B. Noble.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: 1926
SuDoc number:: A 1.23/a:H 468/9

686. Heterocampa guttivitta. Observations on recurring outbreak of Heterocampa guttivitta Walker and natural enemies controlling it [with list of literature cited]; by C. W. Collins.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: 1926
SuDoc number:: A 1.23/a:H 47

687. Hickory spiral borers. Life history of hickory spiral borer, Agrilus arcuatus Say; by Fred E. Brooks.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: 1926
SuDoc number:: A 1.23/a:H 528

688. Ichneumon-flies. Cardiochiles nigriceps Vier., important parasite of tobacco bud worm, Heliothis virescens Fab.; by F. S. Chamberlin and J. N. Tenhet.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: 1926
SuDoc number:: A 1.23/a:T 551/10

689. 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] 1926
SuDoc number:: A 1.9:908/2-5

690. Insecticides. Insecticidal value of certain war chemicals as tested on tent caterpillar; by F. J. Brinley.

Corporate/Agency Authors:: Entomology Bureau and Agriculture Department
Publisher:: Entomology Bureau
Date:: 1926
SuDoc number:: A 1.23/a:C 283

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