. "C." . "1878" . "Al-lyŏn Kwak" . . "C. A. Clark" . "C.A." . "Charles Allen CLARK" . "CLARK" . "Clark"@en . "Al-lyŏn" . . "Al-lyon Kwak" . "Charles Allen Clark"@en . . "곽안련" . . "Allen"@en . "A." . . "Clark, Charles A. (Charles Allen)" . "Kwak" . "Charles"@en . "C.A. Clark" . . "Al-lyon Kwak" . "곽안련" . "Al-lyon" . . . . "C. A. Clark" . "C. A." . . "Charles A. Clark" . . . .