@misc{indiciae8f554d79f75a,
  title = {Piaget's constructionist theory.},
  author = {D Smillie},
  year = {1972},
  doi = {10.1159/000271240},
  url = {https://pubmed.ncbi.nlm.nih.gov/5042948/},
  note = {Source identifier: 5042948}
}