Farm drainage in the United States : history, status, and prospects.

"December 1987"--P. i.

A history of agricultural extension work in the United States, 1785-1923.

Contribution from Extension service.

A study of the potential economic impact of foot-and-mouth disease in the United States /

Issued May 1979.

Non-federal grazing lands in the United States.

"October 1996"--P. [22].

Hydrologic data for experimental agricultural watersheds in the United States /

Description based on: 1971.

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.

Forest taxation in the United States.

Contribution from Forest service.

Forest trees and forest regions of the United States /

Contribution from Forest Service.

The distribution of important forest trees of the United States /

Includes index.

Life history, host plants, and migrations of the beet leafhopper in the western United States,

"Literature cited": p. 119-122.

Physiologic races of Puccinia recondita f. sp. tritici in the United States from 1926 through 1960

Bibliography: p. 18.

Alfalfa germplasm in the United States : genetic vulnerability, use, improvement, and maintenance /

Bibliography: p. 20-21.

USDAHL-74 revised model of watershed hydrology : a United States contribution to the international hydrological decade /

Literature cited: p. 29-30.

Household food consumption patterns in the United States /

Issued Jan. 1979.