Soil survey of Alleghany County, North Carolina /

"By T. Avon Burke, and H.D. Lambert" -- t.p.

Soil survey of Beauford County, North Carolina /

Map laid in.

Soil survey of Kay County, Oklahoma /

"By N.M. Kirk, and R.C. Jurney" -- t.p.

Soil survey of Muskogee County, Oklahoma /

Advance sheets--Field operations of the Bureau of Soils, 1913.

Soil survey of Multnomah County, Oregon /

Advance sheets--Field operations of the Bureau of Soils, 1919.

Soil survey of Blair County, Pennsylvania /

"Advance sheets--Field operations of the Bureau of Soils, 1915".

Soil survey of Clearfield County, Pennsylvania /

"Advance sheets - Field Operations of the Bureau of Soils, 1916."

Soil survey of Mercer County, Pennsylvania /

"Advance sheets--field operations of the Bureau of Soils, 1917".

Reconnoissance soil survey of southeastern Pennsylvania [microform] /

Includes one folded color map.

Bulletin.

Mode of access: Internet.

Some mineralogical properties of Seaton, Fayette, and Clinton soils in Illinois /

Cover title.

Soil: the foundation of agriculture.

Includes bibliographies.

Soil survey of Hoke County, North Carolina /

"Advance sheets--field operations of the Bureau of Soils, 1918"--Cover.

Tour 1-3.

Sponsored by the Soil Science Society of America.

Soil testing : a practical system of soil fertility diagnosis /

Bibliography: p. 28.