TY  - RPRT
TI  - Structural modifications of higher level computer languages for elementary education.
AU  - H Levinson
AU  - M Liotta
PY  - 1989
DO  - 10.1111/j.1749-6632.1989.tb16411.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2699408/
ID  - 2699408
ER  -