Organic soil conditioners /
W. H. Erhardt, E. E. Schulte, L. M. Walsh.

APA Citation

Erhardt, W. H., Walsh, L. M. (Leo Marcellus)., Schulte, E. E., University of Wisconsin--Extension. Cooperative Extension Programs. (1972). Organic soil conditioners. [Madison, Wis.]: University of Wisconsin--Extension.

MLA Citation

Erhardt, W. H, L. M. (Leo Marcellus) Walsh, E. E Schulte, and University of Wisconsin--Extension. Cooperative Extension Programs. Organic Soil Conditioners. [Madison, Wis.]: University of Wisconsin--Extension, 1972.