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Filtering by: Creator Gerdemann, J. W. Remove constraint Creator: Gerdemann, J. W. Creator Hopkins, A. D. (Andrew Delmar), 1857 1948 Remove constraint Creator: Hopkins, A. D. (Andrew Delmar), 1857 1948 Decade 1900-1909 Remove constraint Decade: 1900-1909

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Some insects injurious to forests. pt. I, The locust borer

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Bureau of Entomology

Resource Type:

Technical Report

Full Text:

counties, and less injury due to this insect was found among the trees on the ridges. Mr. J. W. Fetherolf
Black check in western hemlock

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Bureau of Entomology

Resource Type:

Technical Report

Full Text:

'itrk; j, same, in outer sapwood; k, resin mass after maggot work is done and the pupa is formed ; 1
The Black Hills beetle

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Bureau of Entomology

Resource Type:

Technical Report

Full Text:

insectivorous birds. In 1902 Mr. J. L. Webb, special field agent in forest insect investi- gations, assigned
Insect enemies of the spruce in the Northeast : a popular account of results of special investigations, with recommendations for preventing losses

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Division of Entomology

Resource Type:

Technical Report

Full Text:

absence; the Berlin Mills Company, through its president, Mr. W. W. Brown, and vice-president, H. J. Brown
Catalogue of exhibits of insect enemies of forests and forest products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Division of Entomology

Resource Type:

Technical Report

Full Text:

its author. In the preparation of the exhibit Doctor Hopkins has had the expert assistance of Prof. W
On the study of forest entomology in America

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Division of Entomology

Resource Type:

Conference Proceeding

Full Text:

FOREST ENTOMOLOGY IN AMERICA. By A. D. HOPKINS, Morgantown, W. Va. In former addresses by presidents of
The redwood

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948, Fisher, Richard Thorton, 1876-1934, Von Schrenk, Hermann, 1873-1953, and United States. Bureau of Forestry

Resource Type:

Technical Report

Full Text:

Agriculture. PLATE III. Bul. 38, Bureau of Forestry, U. S. Dept, of Agriculture. PLATE W. A STUDY OF

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Hopkins, A. D. (Andrew Delmar), 1857 1948[remove]7
United States. Bureau Of Entomology3
United States. Division Of Entomology3
Fisher, Richard Thorton, 1876 19341
United States. Bureau Of Forestry1
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1900-1909[remove]7

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English [eng]7

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Technical Report6
Conference Proceeding1

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No Copyright - United States7

Subject

Bulletin (United States. Division of Entomology)2
Cheilosia1
Circular (United States. Bureau of Entomology)1
Coast redwood1
Coast redwood -- Diseases and pests1
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