Davies, Robert J.
Allergy the facts
Oxford University Press, 1989
 Buku Teks SO
Facts on Asean
Kementerian Luar Negeri Malaysia
Ministry of Foreign Affairs Malaysia, 1977
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Facts on Canada
Ottawa Departemen of External Affairs 1963
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Facts Tell
Pyongyang Foreign Languages Publishing House 1960
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Sparks, Donald L.
Namibia : the nation after independence / Donald L. Sparks and December Green
Westview Press, 1992
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