Water quality in the Allegheny and Monongahela River Basins Pennsylvania, West Virginia, New York, and Maryland, 1996-98
| Erakunde egilea: | |
|---|---|
| Beste egile batzuk: | |
| Formatua: | Liburua |
| Hizkuntza: | ingelesa |
| Argitaratua: |
Reston, VA, Denver, CO
U.S. Geological Survey, National NAWQA Program Free on application to the U.S. Geological Survey, Information Services
2000.
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| Saila: | U.S. Geological Survey circular
1202 |
| Gaiak: |