R. L. Malcolm
Identifiers
- Open LibraryOL1909103A
Top Subjects
- Organic water pollutants (1)
- United States (1)
- Rivers -- United States (1)
- Water -- Pollution -- United States (1)
- Soils (1)
- Congresses (1)
- Nature/Ecology (1)
Books by R. L. Malcolm
Total count: 2
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Organic carbon and nitrogen concentrations and annual organic carbon load of six selected rivers of the United StatesU.S. Dept. of the Interior, U.S. Geological Survey : for sale by the Supt. of Docs., U.S. Govt. Print. Off.1976-01-01
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Humic Substances in Soil and Crop Sciences: Selected ReadingsProceedings of a Symposium Cosponsored by the International Humic Substances SocietyAmer Society of Agronomy1990-12-01