[1st programs of studying the working and living conditions of agricultural workers in Russia].
D000383:Agriculture / Q000266:history*; D006666:History of Medicine; D009787:Occupational Medicine / Q000266:history; D012423:Rural Health / Q000266:history*; D012425:Russia (Pre-1917)
Pervye programmy issledovaniia usloviĭ truda i byta sel'skokhoziaĭstvennykh rabochikh Rossii