TY  - RPRT
TI  - Learning by experience.
AU  - N F Metcalf
AU  - W K Metcalf
PY  - 1989
DO  - 10.1136/bmj.299.6702.792-b
UR  - https://pubmed.ncbi.nlm.nih.gov/2508929/
ID  - 2508929
ER  -