TY  - RPRT
TI  - Ruby Gumdrop: OR teaching aid.
AU  - D Schmich
AU  - M Booth-Dunn
PY  - 1981
DO  - 10.1016/s0001-2092(07)63007-5
UR  - https://pubmed.ncbi.nlm.nih.gov/6908503/
ID  - 6908503
ER  -