TY  - JOUR
PY  - 1979//
TI  - Permissible levels for occupational exposure; basic concepts
JO  - International archives of occupational and environmental health
A1  - Zielhuis, R. L.
A1  - Notten, W. R.
SP  - 269
EP  - 281
VL  - 42
IS  - 3-4
N2  - <p>[Abstract unavailable]</p> <p>Language: en</p> 
LA  - en
SN  - 0340-0131
UR  - http://dx.doi.org/
ID  - ref1
ER  -