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

Cover title.

Lantern slides and film strips of the United States Department of Agriculture, Washington, D.C.

Earlier edition issued by Extension service, Office of cooperative extension work.

Forest trees and forest regions of the United States /

Contribution from Forest Service.

Work of the United States Forest Service /

"This publication supersede3s Department Circular 211, Government Forest Work, issued in April 1922."

Work of the United States Forest Service /

"This publication supersedes Department Circular 211, Government Forest Work, issued in April 1922."

Work of the United States Forest Service /

"Originally issued January 1938."

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

"Literature cited": p. 119-122.

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

Bibliography: p. 20-21.

Forests and national prosperity : a reappraisal of the forest situation in the United States.

Includes bibliographical references.

Opportunities for career service in the United States Department of Agriculture /

"Issued November 1948."

Economics of forestry : a bibliography for the United States and Canada, 1960-1962 /

Includes index.

Trees and shrubs of the United States : a bibliography for identification /

Includes index.

Central swine-testing and purebred-improvement programs in the United States /

Cover title.

Social Security : opportunities to improve productivity at program service centers : report to the Honorable William Proxmire, United States Senate /

"B-224936"--P. 1.

An Empirical evaluation of preemployment drug testing in the United States Postal Service : interim report of findings.

"January, 1989."