Cunningham, W. P., & Cunningham, M. A. (2007). Principles of environmental science: Inquiry and applications (4th ed.). Tata McGraw-Hill.
Styl ChicagoCunningham, William P., a Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. 4th ed. New Delhi: Tata McGraw-Hill, 2007.
Citace podle MLACunningham, William P., a Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. 4th ed. Tata McGraw-Hill, 2007.
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