| Type |  Book |
| ชื่อเรื่อง | The Deposition and fate of trace metals in our environment, Philadelphia, Pennsylvania, October 8, 1991 / Elon S. Verry & Stephen J. Vermette, editors ; organized by the National Atmospheric Deposition Program National Trends Network |
| พิมพลักษณ์ | [St. Paul, Minn.] : USDA-Forest Service, North Central Forest Experiment Station, 1992 |
| รูปเล่ม | 171 p. : ill., maps |
| หัวเรื่อง | Air --Pollution --Congresses [] |
| | Precipitation (Meteorology) --Congresses [] |
| | Trace elements --Envionmental aspects --Congresses [] |