[Concerning the article of Z. Z. Ashbel' entitled: "The hygienic characteristics of working conditions with the industrial use of ultrasonics"].
D004781:Environmental Exposure; D006801:Humans; D009787:Occupational Medicine; D014465:Ultrasonics
Po povodu stat'i Z. Z. Ashbelia "Gigienicheskaia kharakteristika usloviĭ truda pri promyshlennom primenii ul'trazvuka".