. . "1890" . "1975" . "Clark" . "Sydney Aylmer Clark" . "Sydney Aylmer Clark"@de-DE . . . . "Clark, Sydney (Sydney Aylmer)" . . . "Clark, Sydney A. (Sydney Aylmer)" . . "Clark, Sydney A. (Sydney A.)" . "Clark" . "Sydney A. Clark" . "1890- Sydney Aylmer Clark" . . "Sydney Aylmer" . "Aylmer" . "Sydney"@en . "Clark"@en . "Sydney A." . . . "Clark"@pt-PT . "Sydney Clark" . "Sydney A. Clark" . "Clark Sydney" . "CLARK" . "Sydney" . "A." . "Clark, Sydney Aylmer, 1890-" . . . "Sydney Aylmer CLARK" . "Sydney Clark"@en .