Cunningham, W. P., & Cunningham, M. A. (2004). Principles of environmental science: Inquiry and applications (2nd ed.). McGraw-Hill Higher Education; Tata McGraw-Hill.
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Lua i Stíl Chicago (17ú heag.)
Cunningham, William P., agus Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. 2nd ed. Boston ; New Delhi: McGraw-Hill Higher Education; Tata McGraw-Hill, 2004.
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Lua MLA (9ú heag.)
Cunningham, William P., agus Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. 2nd ed. McGraw-Hill Higher Education; Tata McGraw-Hill, 2004.
Cóipeáladh chuig an ngearrthaisce go rathúil é
Níorbh fhéidir cóipeáil chuig an ngearrthaisce
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