Rao, P. V. (2006). Principles of environmental science and engineering. Prentice-Hall of India.
Chicago Edition CitationRao, P. Venugopala. Principles of Environmental Science and Engineering. New Delhi: Prentice-Hall of India, 2006.
MLA Edition CitationRao, P. Venugopala. Principles of Environmental Science and Engineering. Prentice-Hall of India, 2006.
Warning: These citations may not always be 100% accurate.