[Concerning substantiation of work efficiency rates for 16-17 year-old secondary-school students working on livestock farms].
D000293:Adolescent; D000818:Animals; D002417:Cattle; D003612:Dairying; D004526:Efficiency; D005260:Female; D006801:Humans; D005082:Physical Exertion
K obosnovaniiu norm proizvoditel'nosti truda uchashchikhsia 16-17 let na zhivotnovodcheskikh fermakh.