TY  - GEN
AU  - Karvonen, M
AU  - Mikheev, M.I
TI  - Epidemiology of occupational health
T2  - WHO Regional Publications, European Series No. 20
SN  - 9289011114
U1  - 616.9803 
PY  - 1986///
CY  - Copenhagen
PB  - WHO
ER  -