TY  - RPRT
TI  - Optimal surface for impression cytology.
AU  - R F Refaat
AU  - D Allan
PY  - 1990
DO  - 10.1136/bjo.74.4.254-a
UR  - https://pubmed.ncbi.nlm.nih.gov/2186797/
ID  - 2186797
ER  -