The horseflies of the subfamily Tabaninae of the Nearctic region /

Cover title.

The species of Pantomorus of America north of Mexico /

Contribution from Bureau of Entomology and Plant Quarantine.

A review of the parasitic wasps of the ichneumonid genus Exenterus Hartig /

Contribution from Bureau of Entomology and Plant Quarantine.

A revision of the North American aphids of the genus Myzus /

Copy 2: Amer. Ent. Soc. QL523.A6M3.

A classification of the scale insect genus Asterolecanium /

Contribution from Bureau of Entomology and Plant Quarantine.

The fruitflies of the genus Anastrepha /

Contribution from Bureau of Entomology and Plant Quarantine.

A revision of the North American species of buprestid beetles belonging to the tribe Chrysobothrini ...

Contribution from Bureau of entomology and plant quarantine.

The North American species of whiteflies of the genus Trialeurodes /

Includes indexes.

A revision of the North American species of beetles belonging to the family Bostrichidae /

Contribution from Bureau of Entomology and Plant Quarantine.

Annual report of the Commissioner-General of Immigration to the Secretary of Commerce and Labor for the fiscal year ended ...

Report year ends June 30.

The flies that cause myiasis in man /

Contribution from Bureau of Entomology and Plant Quarantine.

Directory of field activities of the Bureau of Plant Quarantine, 1933.

Includes index.

Inventory of seeds and plants imported / U.S. Department of Agriculture, Bureau of Plant Industry.

48-61, 1921-1922

Inventory of seeds and plants imported / U.S. Department of Agriculture, Bureau of Plant Industry.

37-47

Rules and regulations of Plant Pest Control Branch and Plant Quarantine Branch. Title 7, Chapter III, of the Code of Federal Regulations.

Amendments [issued by Plant Quarantine Division or Plant Pest Control Division.] (1 v. loose-leaf)