TY  - RPRT
TI  - Operant manipulation of a behaviour problem.
AU  - D D Bhattacharya
AU  - R Singh
PY  - 1971
DO  - 10.1007/bf02802566
UR  - https://pubmed.ncbi.nlm.nih.gov/5139981/
ID  - 5139981
ER  -