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Christina Aguilera Christian Pulisic Christian Eriksen Christian Benteke Chris Evans (diễn viên) Christopher Nolan Christine Hà Christian Atsu Chris Hemsworth Chris GunterTài liệu tham khảo
WikiPedia: Christian_Andreas_Doppler http://www.christian-doppler.com http://www.whonamedit.com/doctor.cfm/3039.html http://www-history.mcs.st-andrews.ac.uk/Biographie... https://commons.wikimedia.org/wiki/Category:Christ...