TY  - RPRT
TI  - Preverbal and verbal counting and computation.
AU  - C R Gallistel
AU  - R Gelman
PY  - 1992
DO  - 10.1016/0010-0277(92)90050-r
UR  - https://pubmed.ncbi.nlm.nih.gov/1511586/
ID  - 1511586
ER  -