TY  - RPRT
TI  - Continuing education--is it necessary?
AU  - N L Hilliard
PY  - 1976
DO  - 10.1016/s0003-0465(16)33540-6
UR  - https://pubmed.ncbi.nlm.nih.gov/1270732/
ID  - 1270732
ER  -