(2006). Animal Agriculture and the Environment, National Center for Manure & Animal Waste Management White Papers. ASABE.
Chicago-viite (17. p.)Animal Agriculture and the Environment, National Center for Manure & Animal Waste Management White Papers. ASABE, 2006.
MLA-viite (8. p.)Animal Agriculture and the Environment, National Center for Manure & Animal Waste Management White Papers. ASABE, 2006.
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