INTRODUCTION TO OCCUPATIONAL HEALTH STATISTICS. II. RATES.
D007855:Lead Poisoning; D008433:Mathematics; D009784:Occupational Diseases; D016272:Occupational Health; D009787:Occupational Medicine; D011014:Pneumonia; D013223:Statistics as Topic; D014116:Toxicology
INDUSTRIAL MEDICINE; LEAD POISONING; MATHEMATICS; OCCUPATIONAL DISEASES; PNEUMONIA; STATISTICS; TOXICOLOGIC REPORT