TY  - RPRT
TI  - Asthma and open cast mining.
AU  - S J O'Brien
AU  - R S Bhopal
AU  - B A Harkis
PY  - 1992
DO  - 10.1136/bmj.305.6858.888-a
UR  - https://pubmed.ncbi.nlm.nih.gov/1422419/
ID  - 1422419
ER  -