TY  - RPRT
TI  - Size constancy in retarded versus normal children: a developmental hypothesis.
AU  - B J Richman
AU  - H N Kellner
AU  - D A Allen
PY  - 1968
DO  - 10.1037/h0026415
UR  - https://pubmed.ncbi.nlm.nih.gov/5743316/
ID  - 5743316
ER  -