NALDC

Main content area

MLA

Weir, Wilbert Walter. Soil productivity as affected by crop rotation. U.S. Dept. of Agriculture, 1926.

APA

Weir, Wilbert Walter. (1926). Soil productivity as affected by crop rotation. U.S. Dept. of Agriculture.

Chicago

Weir, Wilbert Walter Soil productivity as affected by crop rotation. U.S. Dept. of Agriculture, 1926.