Dyfyniad APA

Berg, P. (1986). Nitrifier populations and nitrification rates in agricultural soil. Swedish University of Agricultural Sciences, Dept. of Microbiology.

Dyfyniad Arddull Chicago

Berg, Per. Nitrifier Populations and Nitrification Rates in Agricultural Soil. Uppsala: Swedish University of Agricultural Sciences, Dept. of Microbiology, 1986.

Dyfyniad MLA

Berg, Per. Nitrifier Populations and Nitrification Rates in Agricultural Soil. Swedish University of Agricultural Sciences, Dept. of Microbiology, 1986.

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