Leng, R. A. (1991). Improving ruminant production and reducing methane emissions from ruminants by strategic supplementation. [New York].
Chicago-tyylinen lähdeviittausLeng, R. A. Improving Ruminant Production and Reducing Methane Emissions From Ruminants By Strategic Supplementation. [New York], 1991.
MLA-viiteLeng, R. A. Improving Ruminant Production and Reducing Methane Emissions From Ruminants By Strategic Supplementation. [New York], 1991.
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