TY  - RPRT
TI  - Normative data on progressive matrices (1947).
AU  - M W GREEN
AU  - J C EWERT
PY  - 1955
DO  - 10.1037/h0039898
UR  - https://pubmed.ncbi.nlm.nih.gov/14367606/
ID  - 14367606
ER  -