Search Results for the EPA National Library Catalog

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Select Item Title Year Published
Eutrophication in coastal waters : nitrogen as a controlling factor / 1971
Eutrophication in coastal waters: nitrogen as a controlling factor / 1971
Nitrogen in crop production : proceedings of a symposium held 25-27 May 1982 at Sheffield, Alabama / 1984
Nitrogen in terrestrial ecosystems : questions of productivity, vegetational changes, and ecosystem stability / 1991
Nitrogen in the environment / 1978
Nitrogen recycling in the Chowan River 1976
Soil nitrogen, 1965
Soil-plant-nitrogen relationships / 1978
The relative significance of phosphorus and nitrogen as algal nutrients, 1970
The Use of stomatal resistance, photopigments, nitrogen, water potential, and radiation to estimate net photosynthesis in Lirodendron tulipifera L : a physiological index / 1973

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