Save soil systematically : resource management systems for midwestern crop land.

"October 1985"--P. 2.

Conservation assistance around the world.

"April 1989"--P. [2] of cover.

Your woodland : your conservation program.

Mode of access: Internet.

Invite birds to your home : conservation plantings for the Southeast /

"July 1975. Slightly revised October 1981."--P. [4] of cover.

Infiltration of water into the soil.

Mimeographed.

Ground-water-quality appraisal of sand-plain aquifers in Hubbard, Morrison, Otter Tail, and Wadena Counties, Minnesota /

Mode of access: Internet.

Soil survey of the Alturas area, California /

United States Department of Agriculture, Bureau of Chemistry and Soils in cooperation with the University of California Agricultural Experiment Station.

A national program of research for soil and land use /

Mode of access: Internet.

Soil survey of the Santa Barbara area, California /

United States Department of Agriculture in cooperation with the University of California Agricultural Experiment Station.

Soil survey, Auburn area, California /

"In cooperation with the University of California Agricultural Experiment Station."

Soil survey of the Yuma-Wellton area, Arizona-California /

Cover title.

Soil survey manual,

"Effective 1952, the Soil Survey was transferred from the former Bureau of Plant Industry, Soils, and Agricultural Engineering to the Soil Conservation Service."

Characteristics of physicians : December 31, 1975 /

Chiefly tables.

North Central regional extension publication.

"Cooperative extension services of North Dakota [and others] and the U.S. Dept. of Agriculture cooperating."

Soil survey of the Coalinga area, California /

"Literature cited": p. 91.