@misc{indiciaece9cc0bbd47a,
  title = {Developmental trends in arithmetic.},
  author = {F ILG and L B AMES},
  year = {1951},
  doi = {10.1080/08856559.1951.10533584},
  url = {https://pubmed.ncbi.nlm.nih.gov/14880675/},
  note = {Source identifier: 14880675}
}