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Nitrate-nitrogen Removal from Soil Profiles by Alfalfa
- Published in:
- Journal of Environmental Quality, 1975, v. 4, n. 3, p. 403, doi. 10.2134/jeq1975.43403x
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- Publication type:
- Article
A Card Game to be Used as an Elementary Classroom Learning Activity.
- Published in:
- School Science & Mathematics, 1972, v. 72, n. 5, p. 367, doi. 10.1111/j.1949-8594.1972.tb08886.x
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- Publication type:
- Article