[Working conditions and health status of workers in the principal occupational categories at petroleum refineries].
D006304:Health Status; D009784:Occupational Diseases / Q000453:epidemiology*; D010578:Petroleum
D010578:Petroleum
Usloviia truda i sostoianie zdorov'ia rabochikh osnovnykh professional'nykh grupp neftepererabatyvaiushchikh zavodov.