Southwick, Charles H.
Ecology and the quality of our environment
D. Van Nostrand, 1976
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Southwick, Charles H.
Ecology and the quality of our environment
D. Van Nostrand, 1972
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Bush, Mark B
Ecology of a changing planet/ Mark B. Bush
Prentice-Hall, 2000
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Begon, Michael
Ecology : individuals, populations and communities / Michael Begon, John L. Harper, and Colin R. Townsend
Blackwell Science, 1996
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Etherington, John R.
Environment and plant ecology / John R. Etherington
Wiley Eastern, 1976
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