Patai, Raphael
Hraf Press , 1957
Buku Teks
Salmon, Claudine, author
Editions de la Maison des sciences de l'homme, 1981
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Polman, Katrien
The Hague Martinus Nijhoff, 1981
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Gershoy, Leo, author
Appleton Century Crofts, 1964
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FRIM-UNDP/GEF peat Swamp Forest Project, 2005
Buku Teks