[Work experience of the department of hygiene in connection with utilization of virgin soil and fallow ground].
D000383:Agriculture; D006920:Hygiene; D016272:Occupational Health; D012987:Soil
D012987:Soil
AGRICULTURE; INDUSTRIAL HYGIENE
Opyt raboty kafedry gigieny v sviazi s osvoeniem tselinnykh i zalezhnykh zemel'.