Browsing WQ - Water quality initiative (MU Extension) by Title "WQ - Water Quality Initiative (University of Missouri--Columbia. Extension) ; 0251"

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  • Nitrogen in the environment : what is nitrogen? 

    Killpack, Scott C.; Buchholz, Daryl (University of Missouri. Extension Division, 1993)
    "Nitrogen is extremely important to living material. Plants, animals and humans could not live without it. The major source of nitrogen is the atmosphere. It exists as a colorless, nontoxic gas and makes up about 78 percent ...