TY  - RPRT
TI  - [Experimental epidemiology-intervention studies on the development of preventive programs].
AU  - S Böthig
AU  - J Knappe
AU  - W Barth
AU  - G Strube
PY  - 1972
UR  - https://pubmed.ncbi.nlm.nih.gov/4635445/
ID  - 4635445
ER  -