Contour farming boosts yields : a farmer's guide in laying out key contour lines and establishing grassed waterways
| Corporate Author: | |
|---|---|
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Washington, D.C.] :
U.S. Dept. of Agriculture,
[1943]
|
| Series: | AWI ;
23 |
| Subjects: |