TY  - RPRT
TI  - Evolution of nursing sciences: implications for nursing world wide.
AU  - M A Ahad
PY  - 1981
DO  - 10.1111/j.1547-5069.1981.tb01484.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6909116/
ID  - 6909116
ER  -