TY  - RPRT
TI  - Analysis of process data from token groups in a summer camp.
AU  - R V Heckel
AU  - L Hursh
AU  - J M Hiers
PY  - 1977
DO  - 10.1002/1097-4679(197701)33:1+<241::aid-jclp2270330155>3.0.co;2-x
UR  - https://pubmed.ncbi.nlm.nih.gov/833311/
ID  - 833311
ER  -