Barnes, R.S.K.
An introduction to marine ecology
Blackwell Scientific Publications, 1988
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Rogers, Edward S.
Human ecology and health: an introduction for administration
Macmillan, 1960
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Brewer, Richard
The science of ecology
Saunders College Publishing, 1994
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Ehrlich, Paul R.
The science of ecology
Macmillan, 1987
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Kormondy, Edward J.
Concepts of ecology
Prentice-Hall, 1976
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