[Ludwig Hirt--a fighter for legislative industrial safety].
D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D007883:Legislation, Medical / Q000266:history*; D009784:Occupational Diseases / Q000266:history / Q000517:prevention & control; D009787:Occupational Medicine / Q000266:history*; D011315:Preventive Medicine / Q000266:history
Ludwig Hirt--ein Kämpfer für den gesetzlichen Arbeitsschutz.