Dyfyniad APA

Ahluwalia, V. K. Environmental studies: Basic concepts. The Energy and Resources Institute.

Dyfyniad Arddull Chicago

Ahluwalia, V K. Environmental Studies: Basic Concepts. New Delhi: The Energy and Resources Institute.

Dyfyniad MLA

Ahluwalia, V K. Environmental Studies: Basic Concepts. The Energy and Resources Institute.

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