@misc{indiciae62fd2741b2d7, title = {A constructivist approach to concept attainment.}, author = {A Kinghorn}, year = {1991}, doi = {10.1016/0260-6917(91)90095-r}, url = {https://pubmed.ncbi.nlm.nih.gov/1881381/}, note = {Source identifier: 1881381} }