TY  - RPRT
TI  - Gingival tissue retraction for the elastic impression materials.
AU  - A W Bull
AU  - G I Brinsden
PY  - 1967
DO  - 10.1111/j.1834-7819.1967.tb02206.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4860964/
ID  - 4860964
ER  -