"350-359" . "A L RUSSELL" . . . . . "scientific article published on 01 June 1956"@en . . "A system of classification and scoring for prevalence surveys of periodontal disease"@nl . "wetenschappelijk artikel"@nl . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u0447\u0435\u0440\u0432\u043D\u0456 1956"@uk . "1956 \u0569\u057E\u0561\u056F\u0561\u0576\u056B \u0570\u0578\u0582\u0576\u056B\u057D\u056B 1-\u056B\u0576 \u0570\u0580\u0561\u057F\u0561\u0580\u0561\u056F\u057E\u0561\u056E \u0563\u056B\u057F\u0561\u056F\u0561\u0576 \u0570\u0578\u0564\u057E\u0561\u056E"@hy . . "A system of classification and scoring for prevalence surveys of periodontal disease"@en . "1956-06-01T00:00:00Z"^^ . "A system of classification and scoring for prevalence surveys of periodontal disease"@nl . "A system of classification and scoring for prevalence surveys of periodontal disease"@en . . . . "3" . . . "35" . "A system of classification and scoring for prevalence surveys of periodontal disease"@en . . "A system of classification and scoring for prevalence surveys of periodontal disease"@nl . "10.1177/00220345560350030401" . "im Juni 1956 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . . . "13332137" . "art\u00EDculu cient\u00EDficu espubliz\u00E1u en xunu de 1956"@ast . . . "A system of classification and scoring for prevalence surveys of periodontal disease"@en . .