TY  - RPRT
TI  - A study of workload in a mining area practice.
AU  - J G Rider
AU  - W H Waters
AU  - R B Charnock
AU  - J E Lunn
PY  - 1969
UR  - https://pubmed.ncbi.nlm.nih.gov/5786471/
ID  - 5786471
ER  -