Rivera, Temario C.
Institute of Southeast Asia studies, 1996
Buku Teks
Bunbongkarn, Suchit
Institute of southeast Asian studies, 1996
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editors, Marlon A. Wui, MA. Glenda S. Lopez
Third World Studies Center, 1997
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Laquian, Aprodicio A., author
University of Philippines, 1966
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