TY  - RPRT
TI  - Concept graphics: a language for medical knowledge.
AU  - B Preiss
AU  - M Kaltenbach
AU  - J Zanazaka
AU  - V Echave
PY  - 1992
UR  - https://pubmed.ncbi.nlm.nih.gov/1482928/
ID  - 1482928
ER  -