Farmers' Bulletin: Issue 88

An Electrical Method of Determining the Soluble Salt Content of Soils: With Some Results of Investigations on the Effect of Water and Soluble Salts on the Electrical Resistance of Soils

Alkali Lands

The Alkali Soils of the Yellowstone Valley: From a Preliminary Investigation of the Soils Near Billings, Montana

Field Operations of the Bureau of Soils

Some Physical Properties of Soils in Their Relation to Moisture and Crop Distribution

Field Operations of the Bureau of Soils

Field Operations of the Division of Soils

Field Operations of the Bureau of Soils

Field Operations of the Bureau of Soils: Volume 17, Part 2

Some Physical Properties of Soils in Their Relation to Moisture and Crop Distribution

The Use of Soils East of the Great Plains Region: Based Upon the Work of the Bureau of Soils to January 1, 1910

Exhaustion and Abandonment of Soils: Testimony of Milton Whitney ... Before the Industrial Commission

Field Operations of the Bureau of Soils

Field Operations of the Bureau of Soils

Farmers' Bulletin: Issue 83

Field Operations of the Bureau of Soils

Field Operations of the Bureau of Soils, 1907: Ninth Report

Field Operations of the Division of Soils

Field Operations of the Bureau of Soils: 1920