Park, Chris
A Dictionary environment and conservation
Oxford University Press, 2008
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Allaby, Michael
Macmillan dictionary of the environment
Macmillan, 1985
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Allaby, Michael
McMillan dictionary of the environment
Macmillan, 1983
 Buku Referensi
Allaby, Michael
Macmillan dictionary of the environment
Macmillan, 1991
 Buku Referensi
Dictionary
London: Tiger Books International, 1994,
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