[Development of industrial hygiene research in the shale oil industry of the Estonian SSR].
D004957:Estonia; D049673:History, 20th Century; D008906:Mining / Q000266:history*; D009787:Occupational Medicine / Q000266:history*; D010578:Petroleum
D010578:Petroleum
O razvitii issledovanii po gigiene truda v slantsevoi promyshlennosti Estonskoi SS.