Cunningham, W. P. (2004). Principle of environmental science: Inquiry and applications. New York, NY: McGraw-Hill.
Trích dẫn kiểu ChicagoCunningham, William P. Principle of Environmental Science: Inquiry and Applications. New York, NY: McGraw-Hill, 2004.
Deismireacht MLACunningham, William P. Principle of Environmental Science: Inquiry and Applications. New York, NY: McGraw-Hill, 2004.
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