title: Trends in respirator system cancer mortality in Louisiana: geographic distributions in 1950-1969 and 1967-1976 compared.
mesh_terms: D005260:Female; D006801:Humans; D008145:Louisiana; D008297:Male; D044469:Racial Groups; D012142:Respiratory Tract Neoplasms / Q000401:mortality*; D012744:Sex Ratio