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

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

Descriptions of types of principal American varieties of red garden beets /

Includes indexes.

A revision of the genus Lycopersicon /

"July 1940."

Plants reported resistant or tolerant to root knot nematode infestation /

Contribution from Bureau of Plant Industry.

A classification of the scale insect genus Asterolecanium /

Contribution from Bureau of Entomology and Plant Quarantine.

The Aspergillus glaucus group /

Caption title.

The fruitflies of the genus Anastrepha /

Contribution from Bureau of Entomology and Plant Quarantine.

Modeling southern pine beetle populations, symposium proceedings : Asheville, N.C., February 20-22, 1980 /

"September 1980."

The fleas of North America : classification, identification, and geographic distribution of these injurious and disease-spreading insects /

Contribution from Bureau of Entomology and Plant Quarantine.

Forest resources of the ponderosa pine region of Washington and Oregon /

Investigation conducted by the Pacific Northwest forest and range experiment station. cf. p. ii.

Day length and crop yields /

"Issued September 1942."

Factors influencing the nutritive value of the tomato : a review of the literature /

Contribution from Bureau of Plant Industry.

Classification of the Dermestidae (larder, hide, and carpet beetles) based on larval characters : with a key to the North American genera /

Contribution from Bureau of Entomology and Plant Quarantine.

Fiber production in the western hemisphere /

"For Spanish edition of this material see: ... [his] Fibras vegetales y su producción en América. Translated by María A. Ruisánchez Masters. Unión panamericana, Officina de cooperación agrícola Pub. agric. nos. 137-140"--Foot-notes, p. 1.

A Review of studies on the Mexican fruitfly and related Mexican species /

Contribution from Bureau of Entomology and Plant Quarantine.