Agriculture, economics, and resource management
| Prif Awduron: | , |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Englewood Cliffs, New Jersey
Prentice Hall, Inc.
©1975.
|
| Rhifyn: | [3rd ed.]. |
| Pynciau: |
| Prif Awduron: | , |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Englewood Cliffs, New Jersey
Prentice Hall, Inc.
©1975.
|
| Rhifyn: | [3rd ed.]. |
| Pynciau: |