Soils -- Washington (State)

Soil survey (reconnaissance) of the Columbia basin area, Washington.

By A.T. Strahorn ... E.J. Carpenter, W.W. Weir, Scott Ewing and H.H. Krusekopf ... and A.F. Heck and H.A. Lunt ...

The fertility of Washington soils

by F.J. Sievers and Henry F. Holtz ...

Map bulletin no. 1

by E.W. Hilgard.

Contributions to the geography of the United States, 1926

Marius R. Campbell, geologist in charge.

The influence of the native calcium and phosphorus content of the soil upon the presense [i.e. presence] of these elements in the crop produced.

Paul Wright LeCornu

The silt loam soils of eastern Washington and their management

by F.J. Sievers and H.F. Holtz ...

State of Washington engineering soils manual

Washington (State). State Council for Highway Research.

The effect of various cropping and fertility practices on the structure and cation exchange status of Palouse silty clay loam ...

Leonard Zobler

Characterization of an important Washington state soil - Warden very fine sandy loam

by Joseph F. Wayashe.

Washington soils

by R.W. Thatcher.