TY  - RPRT
TI  - [Mass communication and personal communication in health education. Report of a convention].
AU  - R Mühlemann
AU  - G Bretscher
PY  - 1977
DO  - 10.1007/bf02074389
UR  - https://pubmed.ncbi.nlm.nih.gov/24930/
ID  - 24930
ER  -