TY  - RPRT
TI  - Concept usage in schizophrenic children.
AU  - H A Walker
AU  - M Bortner
PY  - 1975
DO  - 10.1007/bf01537932
UR  - https://pubmed.ncbi.nlm.nih.gov/1174118/
ID  - 1174118
ER  -