1. Publication of negative findings

   • R. L. Zielhuis

   Editorial Pages: 71 - 71

2. Circadian system response to night work in relation to the individual circadian phase position

   • G. Hildebrandt
   • I. Stratmann

   OriginalPaper Pages: 73 - 83

3. Lung contamination among foundry workers

   • P.- L. Kalliomäki
   • O. Korhonen
   • M. Koponen

   OriginalPaper Pages: 85 - 91

4. Biological activity of titanium dioxides

   • A. Zitting
   • E. Skyttä

   OriginalPaper Pages: 93 - 97

5. Study of some erythrocyte and serum enzyme activities in workers exposed to low ozone concentrations for a long time

   • F. Sarto
   • A. Trevisan
   • L. Fabbri

   OriginalPaper Pages: 99 - 105

6. Zur problematik der begutachtung von bronchialcarcinomen nach exposition gegenüber chromverbindunge

   • A. Zober

   OriginalPaper Pages: 107 - 121

7. The role of chromium accumulation in the relationship between airborne and urinary chromium in welders

   • A. Mutti
   • A. Cavatorta
   • I. Franchini

   OriginalPaper Pages: 123 - 133

8. Effect of cigarette smoke on the eyes and airway

   • R. J. Shephard
   • E. Ponsford
   • P. K. Basu

   OriginalPaper Pages: 135 - 144

9. Occupational chronic exposure to organic solvents

   • J. Angerer
   • G. Lehnert

   Short Communications Pages: 145 - 150

10. European community research seminar on trace metals: Exposure and health effects

    • E. Di Ferrante
    • A. Berlin

    Documents of International Meetings and Activities Pages: 151 - 157