Vegetational change along altitudinal gradients : studies in Ethiopia show that discreteness of zonation varies with steppness of slope. - Washington, D.C.
| 1. Verfasser: |
Beals, Edward W.
|
|---|---|
| Ort/Verlag/Jahr: |
1969.
|
| Schlagworte: | |
| Enthalten in: |
Science ; 165.1969, no. 3897, S. 981-985 : zahlr. Ill. |
