TY  - RPRT
TI  - Extraction vs. nonextraction. And a third.
AU  - R D Helmholdt
PY  - 1999
DO  - 10.14219/jada.archive.1999.0079
UR  - https://pubmed.ncbi.nlm.nih.gov/10573925/
ID  - 10573925
ER  -