The Southern pine beetle /

Includes bibliographies and index.

Facilities for insect research and production /

Issued June 1978.

Nearctic sawflies,

Vol. 4 issued June 1979.

Simple home repairs...inside.

"November 1979"--T.p. verso.

Controlling diseases of raspberries and blackberries /

G.P.O. sales statement incorrect in publication.

Evaluation of light traps and sex pheromone for control of cabbage looper and other lepidopterous insect pests of lettuce /

Issued Jan. 1980.

Nicotiana : procedures for experimental use /

Issued Jan. 1979.

Hydrologic data for experimental agricultural watersheds in the United States /

Description based on: 1971.

Frequencies of nodulation response alleles, Rj₂ and Rj₄, in soybean plant introduction and breeding lines /

Chiefly tables.

Descriptive epizootiology of an aphid mycosis.

Bibliography: p. [17]

A monograph of Trichonta with a model for the distribution of Holarctic Mycetophilidae (Diptera) /

Issued Sept. 1981.

New species of North American bees of the genus Dufourea (Hymenoptera, Halictidae) with descriptions of two previously undescribed females /

Cover title.

Homonymy in world species-group names of Criocerinae (Coleoptera, Chrysomelidae) /

"Issued March 1981"--T.p. verso.

A revision of the American species of Hibiscus section Bombicella (Malvaceae) /

Includes indexes.

A systematic analysis of the pine pitch midges, Cecidomyia spp. (Diptera: Cecidomyiidae) /

Issued Nov. 1978.