[Prospects for the hygienic improvement of tractors and self-propelled agricultural machinery].
D000383:Agriculture / Q000295:instrumentation* / Q000592:standards; D006804:Ergonomics; D009787:Occupational Medicine; D013672:Technology / Q000295:instrumentation / Q000592:standards; D014586:USSR
Perspektivy gigienicheskogo sovershenstvovaniia traktorov i samokhodnykh sel'skokhoziaĭstvennykh mashin.