Note 48 — SOILS AND FERTILIZERS.[46]
Reading edition
Leguminous Plants for Green Manuring and for Feeding. E. W. Allen, Ph. D. United States Department of Agriculture. Farmers' Bulletin, No. 16.
Reading edition
Leguminous Plants for Green Manuring and for Feeding. E. W. Allen, Ph. D. United States Department of Agriculture. Farmers' Bulletin, No. 16.