TY  - RPRT
TI  - Health and efficiency.
AU  - G A Pryor
AU  - J W Myles
PY  - 1987
DO  - 10.1136/bmj.295.6589.51
UR  - https://pubmed.ncbi.nlm.nih.gov/3113612/
ID  - 3113612
ER  -