Virulence, aggressiveness, evolution, and distribution of races of Puccinia striiformis (the cause of stripe rust of wheat) in North America, 1968-87.

"Issued February 1992"--P. [2] of cover.

Oat history, identification and classification /

Includes index.

Integrating control of the Japanese beetle : a historical review /

Item 16

Restoring moisture to cotton at midsouth gins /

Information incorrect in publication as to sale by the Supt. of Docs.

The citrus nematode and its control in the Southwest /

Issued Nov. 1974.

Alkaloid-bearing plants and their contained alkaloids

Mode of access: Internet.

Regional adjustments in grain production : a linear programming analysis : mathematical models, proofs, methods of data collection and estimation, and supplementary tables /

Cover title.

Loss of energy at sharp-edged pipe junctions in water conveyance systems,

Project conducted in cooperation with Minnesota Agricultural Experiment Station and St. Anthony Falls Hydraulic Laboratory of the University of Minnesota.

Stem sawflies of economic importance in grain crops in the United States,

"Literature cited": p. 37-50.

Aggregate stability of soils from Western United States and Canada; measurement procedure, correlations with soil constituents

Cover title.

Workers in subjects pertaining to agriculture in land-grant colleges and experiment stations.

Mode of access: Internet.

The noctuid type material of John B. Smith (Lepidoptera) /

"Issued March 1982"--Verso of t.p.

Yellow nutsedge : a menance in the Corn Belt /

Bibliography: p. 10-11.

Nitrogen fixation in alfalfa : responses to bidirectional selection for associated characteristics /

"Issued December 1981"--2d prelim. page.

A taxonomic revision of the genus Lolium,

Bibliography: p. 44-45.