Nature?s wonderlands : national parks of the world.
National Geographic Society (U.S.)
National Geographic Society, 1989
 Buku Referensi
Voices of Loagan Bunut
2007
 Multimedia
National parks
2000
 Multimedia
Kindangen, Simon Albert, author
Beberapa faktor sosial dan ekonomi yang menghambat pengelolaan Taman Nasional Dumoga Bone di Daerah Sulawesi Utara
Program Pascasarjana Universitas Indonesia, 1985
 UI - Tesis (Membership)
Parker, Howard, author
Illegal Leisure : the normalization of adolescent recreational drug use
Routledge, 1998
 Buku Teks
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