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Agricultural ecology
Longman Scientific & Technical, 1992
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Hanks, Lucien M
Rice and man: Agricultural ecology in Southeast Asia / Lucien M. Hanks
Aldine Atherton, 1972
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Tropical resources : ecology and development
edited by Jose I. Furtado
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Kormondy, Edward J.
Concepts of ecology
Prentice-Hall, 1976
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Brewer, Richard
The science of ecology
Saunders College, 1994
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