TY - JOUR T1 - Developments in Occupational Medicine JO - Scandinavian Journal of Work, Environment & Health PY - 1981/6VL - 7 IS - 2 SP - 152 EP - 153 AU - Härkönen, Hannu UR - https://www.sjweh.fi/show_abstract.php?abstract_id=3050 SN - 0355-3140 ER -