TY  - RPRT
TI  - Measuring heroin use in methadone maintenance programmes.
AU  - K Howard
AU  - J Bell
AU  - M J Christie
PY  - 1995
DO  - 10.1080/09595239500185031
UR  - https://pubmed.ncbi.nlm.nih.gov/16203293/
ID  - 16203293
ER  -