TY  - RPRT
TI  - [Preparing for old age, necessity, ways, content, limits (author's transl)].
AU  - S Eitner
AU  - A Eitner
AU  - U J Schmidt
AU  - F H Schulz
PY  - 1976
UR  - https://pubmed.ncbi.nlm.nih.gov/983146/
ID  - 983146
ER  -