Man's impact on environment
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York
McGraw-Hill Book Company
1971.
|
| Cyfres: | McGraw-Hill series in geography
|
| Pynciau: |
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York
McGraw-Hill Book Company
1971.
|
| Cyfres: | McGraw-Hill series in geography
|
| Pynciau: |