[Status of the hygienic training of agricultural equipment operators].
D000383:Agriculture / Q000295:instrumentation*; D006266:Health Education; D009787:Occupational Medicine / Q000193:education*; D012423:Rural Health; D014586:USSR
O sostoianii gigienicheskoĭ podgotovki mekhanizatorov sel'skogo khoziaĭstva.