[Impressions from the trip to Sweden, Norway, England and France in 1949].
D004739:England; D005602:France; D006801:Humans; D009664:Norway; D016272:Occupational Health; D012919:Social Behavior; D013548:Sweden
INDUSTRIAL HYGIENE
Zpráva o studijnäm pobytu ve Svédsku, Norsku, Anglii a Francii r. 1949.