Wilson, Stephen
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Buku Teks
Speser, Phyllis L.
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Buku Teks
Iranian Society of Environmentalists (IRSEN) and Center for the Environment and Energy Research and Studies (CEERS), {s.a}
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Francastel, Pierre.
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Buku Teks
J.P. Singh, Madeline Carr and Renée Marlin-Bennett, editors
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Buku Teks