Soil testing : a practical system of soil fertility diagnosis /

Bibliography: p. 28.

Forest tree planting manual for Illinois : a manual dealing with the distribution and planting of forest tree seedlings for the production of timber crops and for the conservation of soil, water, and wildlife in Illinois.

Subtitle varies slightly.

Economic evaluation of use of soil conservation and improvement practices in western Iowa /

Includes bibliographical references (p. 82).

Bioassay of soil containing residues of chlorinated hydrocarbon insecticides : with special reference to control of Japanese beetle grubs /

Literature cited: p. 38-44.

The story of soil conservation in the South Carolina Piedmont, 1800-1860 /

"The greater part of the material used was selected from the files of the Work Projects Administration Erosion history project, 701-2-240, Columbia, S.C."--Foot-note, p. 1.

A computerized system for estimating and displaying shortrun costs of soil conservation practices /

"August 1981."

New landmarks of soil conservation : U.S. Department of Agriculture, Soil conservation service, southern states.

Cover title.

Arkansas, Black, Red, Ouachita, and White River systems and their tributaries : hearings before the Committee on Flood Control, House of Representatives, Seventy-fourth Congress, first session, measures providing for the prevention of soil erosion, for flood control, for irrigation, for navigation, for constructing hydroelectric plants, and other betterments in the areas drained by the Arkansas, Black, Red, Ouachita, and White River systems and their tributaries. Februrary 14, 15, 16, and 19, 1935.

Riley J. Wilson, chairman.

Manual of soil and water conservation engineering,

Mode of access: Internet.

Big Hugh, the father of soil conservation;

Mode of access: Internet.

Field manual of soil engineering.

Mode of access: Internet.