TY  - RPRT
TI  - A systems approach to the nursing process.
AU  - A T Altschul
PY  - 1978
DO  - 10.1111/j.1365-2648.1978.tb00848.x
UR  - https://pubmed.ncbi.nlm.nih.gov/248379/
ID  - 248379
ER  -