TY  - RPRT
TI  - Efficient purchasing.
AU  - A Clarke
AU  - M McKee
AU  - J Appleby
AU  - T Sheldon
PY  - 1993
DO  - 10.1136/bmj.307.6917.1436
UR  - https://pubmed.ncbi.nlm.nih.gov/8281080/
ID  - 8281080
ER  -