TY  - RPRT
TI  - Numerical abstraction by human infants.
AU  - P Starkey
AU  - E S Spelke
AU  - R Gelman
PY  - 1990
DO  - 10.1016/0010-0277(90)90001-z
UR  - https://pubmed.ncbi.nlm.nih.gov/2225757/
ID  - 2225757
ER  -