[Work and rest regimen of coal miners occupied in mining coal in thin seams].
D003032:Coal Mining; D006801:Humans; D009787:Occupational Medicine; D010507:Periodicity; D012146:Rest; D013647:Task Performance and Analysis; D014455:Ukraine; D014937:Work
O rezhime truda i otdykha gornorabochikh ugol'nykh shakt, zaniatykh dobychei uglia na tonkikh plastakh.