CONTENTS — volume 17, no 2, 1991

Original article

Low-back pain, its origin and risk indicators.
Magnesium and calcium in drinking water and cardiovascular mortality.
Paternal occupational lead exposure and spontaneous abortion.
Coxarthrosis and physical work load.
Evaluation of the physical work load of bricklayers in the steel industry.
Feeding and bedding materials as sources of microbial exposure on dairy farms.
Assessment of genotoxic exposure in Swedish coke-oven work by different methods of biological monitoring.
Comparison of methods for the biomonitoring of nurses handling antitumor drugs.
Evaluation of serum aminoterminal propeptide of type III procollagen as an early marker of the active fibrotic process in asbestos-exposed workers.