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Keratin Keratitis Keratong Keraton Ngayogyakarta Hadiningrat Keratan kon Keraton Kerstin Hesselgren Keratan rentas (geometri) Keratan tumbuhan Keraton, SuranenggalaRujukan
WikiPedia: Keratin http://www.wisegeek.com/what-is-keratin.htm http://www.bio-medicine.org/biology-definition/Ker...