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Khmer language - Wikipedia
Khmer people - Wikipedia
History of Cambodia | War, Khmer Rouge, Genocide, & Facts
Khmer empire | History, Map, Notable Sites, & Facts | Britannica
Khmer | Cambodia, Angkor, Theravada Buddhism | Britannica
Khmer (Cambodian) alphabet and language - Omniglot
Khmer Empire - World History Encyclopedia
Cambodia - Wikipedia
Khmer Empire - New World Encyclopedia
Khmer Rouge: Cambodia's years of brutality - BBC News