TY  - RPRT
TI  - [A selective, need-oriented prevention program for primary schoolchildren - results after two years].
AU  - K Pieper
AU  - G Hüttmann
AU  - W Evers
AU  - F Gehring
PY  - 1989
UR  - https://pubmed.ncbi.nlm.nih.gov/2598871/
ID  - 2598871
ER  -