Environmental geology conservation, land-use planning, and resource management.
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York
Harper & Row
[c1970]
|
| Pynciau: | |
| Mynediad Ar-lein: | Table of contents only |