TY  - RPRT
TI  - Letter: Prison control units.
AU  - S Trevelyan
AU  - M Hobbs
PY  - 1975
DO  - 10.1136/bmj.4.5987.42
UR  - https://pubmed.ncbi.nlm.nih.gov/1174924/
ID  - 1174924
ER  -