Pfafflin, J. R., & Ziegler, E. N. (1983). Encyclopedia of environmental science and engineering (2nd rev. and updated ed.). Gordon and Breach Science Publishers.
Citace podle Chicago (17th ed.)Pfafflin, James R., a Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 2nd rev. and updated ed. New York: Gordon and Breach Science Publishers, 1983.
Citace podle MLA (8th ed.)Pfafflin, James R., a Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 2nd rev. and updated ed. Gordon and Breach Science Publishers, 1983.
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