. . . . . "8" . "1977-12-29" . "rus" . . "N" . "MEDLINE" . "Aug" . "0014-9772" . . "Print" . "42" . "NLM" . "Y" . "5-7" . "2004-11-17" . . . . . . "1977" . "[Improvement of organization of preventive vaccinations in rural areas]." . "Journal Article" .