[Sanitary-hygienic characteristics of working conditions at dairy farms with untethered cows].
D000391:Air Microbiology; D000397:Air Pollution; D000641:Ammonia / Q000032:analysis; D000818:Animals; D002245:Carbon Dioxide / Q000032:analysis; D002417:Cattle; D003612:Dairying; D005260:Female; D006859:Hydrogen / Q000032:analysis; D013440:Sulfides / Q000032:analysis
D013440:Sulfides; D002245:Carbon Dioxide; D000641:Ammonia; D006859:Hydrogen
Sanitarno-gigienicheskaia kharakteristika usloviĭ truda na fermakh krupnogo rogatogo skota s bespirviaznym soderzhaniem zhivotnykh.