CONTENTS — volume 1, no 4, 1975

Original article

Uptake of solvents in the blood and tissues of man. A review.
Blood lead levels and erythrocyte delta-amino-levulinic acid dehydratase activity of selected population groups in Helsinki.
Relationship between work environment and anamnestic health status. Use of predictors, indicators and indices for the evaluation of medical and environmental factors.
Methods for measuring trichloroethanol and trichloroacetic acid in blood and urine after exposure to trichloroethylene.
Effects of a welding helmet and dust respirators on respiration at rest and during exercise.
Problems related to shift work. A field study of Swedish railroad workers with irregular work hours.